Conflict between the English and the Nawabs of Bengal: The Battle of Plassey to the Battle of Buxar
The conflict between the English East India Company and the successive Nawabs of Bengal — unfolding across the Battle of Plassey (1757) and culminating in the Battle of Buxar (1764) — marks the true foundational moment of British political power in India. What began as a trading dispute steadily escalated into outright political conquest, transforming the East India Company from a mere commercial enterprise into the effective sovereign of Bengal, Bihar, and Orissa within less than a decade. Tracing this transformation — through Plassey, the troubled reigns of Mir Jafar and Mir Kasim, and the decisive confrontation at Buxar — is essential for understanding the true origins of British colonial rule in India, a cornerstone topic for UPSC aspirants studying Modern Indian History.
The Battle of Plassey
The Battle of Plassey was a decisive victory of the British East India Company over Siraj-ud-Daulah, Nawab of Bengal, fought on 23 June 1757. The battle established Company rule in Bengal, a foothold that would expand across much of India over the following century. It was fought at Plassey, on the banks of the Bhagirathi River, roughly 150 km north of Calcutta and south of Murshidabad, then the capital of Bengal.
Background and Causes of the Battle
By the early 18th century, the British East India Company had established a strong presence in India through three principal stations: Fort St. George in Madras, Fort William in Calcutta, and Bombay Castle in western India. These stations functioned as independent presidencies, each governed by a President and Council appointed by the Court of Directors in England. The British consistently pursued a policy of allying themselves with various local princes and Nawabs, offering security against usurpers and rebels in exchange for valuable trading concessions.
- By this stage, earlier rivalry between the British East India Company and the Dutch or Portuguese had largely subsided. The French, who had established their own East India Company under Louis XIV, maintained two important Indian stations — Chandernagore in Bengal and Pondichéry on the Carnatic coast — both governed under the Pondichéry presidency. Though relative latecomers to Indian trade, the French had rapidly established themselves and appeared genuinely poised to overtake British influence.
- Alivardi Khan ascended to the Nawabship of Bengal in 1740, after his army stormed and captured the Bengal capital, Murshidabad. His attitude towards the Europeans settled in Bengal was notably strict — during his wars against the Marathas, he permitted the Europeans to strengthen their fortifications, including the British construction of the Maratha Ditch around Calcutta, while simultaneously extracting large sums of money from them to help fund his campaigns.
- (The Maratha Ditch was a three-mile-long moat, excavated by the British around Calcutta in 1742 as protection against feared Maratha attacks. Local inhabitants were required to pay for its construction, despite it being intended to protect the British seat of power, Fort William. The Marathas, in the end, never attacked the city, and the ditch later proved entirely useless when Siraj-ud-Daulah himself ransacked the British settlement in 1756. It was largely filled in by 1799 to build the Circular Road; the area it once enclosed came to be regarded as the original town of Calcutta.)
- Alivardi Khan remained well-informed about the situation unfolding in southern India, where the British and French had already begun waging a proxy war through local princes and rulers. Determined to prevent a similar situation from developing in his own province, he exercised considerable caution in his dealings with the Europeans throughout his reign.
- Persistent friction nonetheless remained: the British repeatedly complained that they were being denied full enjoyment of the rights granted under the 1717 farman issued by Mughal Emperor Farrukhsiyar. (The East India Company had purchased duty-free trading rights across all of Bengal for a mere three thousand rupees a year from Farrukhsiyar — reportedly after the Company’s surgeon, William Hamilton, successfully cured the Emperor of an ailment, moving him to grant these valuable trading privileges.)
- The British, for their part, regularly issued passes to native traders permitting them to trade custom-free, while simultaneously levying substantial duties on goods entering their own districts — practices that directly undermined the Nawab’s own revenue base.
- In April 1756, Alivardi Khan died and was succeeded by his twenty-three-year-old grandson, Siraj-ud-Daulah, a ruler said to combine a ferocious temper with a comparatively feeble understanding of statecraft. He was particularly suspicious of the large profits being accumulated by the various European trading companies in his territory.
- The British, for their part, harboured ambitions of eventually occupying the rich and prosperous region of Bengal outright, by systematically subjugating the power of both the Nawab and rival European interests.
Fort William, established to protect Company trade in Calcutta, was steadily reinforced by the British amid growing fears of conflict with French forces. Siraj-ud-Daulah, deeply unhappy with the Company’s interference in his province’s internal affairs and perceiving a genuine threat to his own independence, immediately ordered the British to cease these fortification activities, which had proceeded entirely without his permission.
- When the British refused to halt construction, the Nawab led a detachment to surround the Company’s fort and factory at Cossimbazar, taking several British officials prisoner, before advancing on Calcutta itself. The defences of Calcutta proved weak and largely negligible against the Nawab’s substantial force of nearly 50,000 infantry and cavalry.
- The city was occupied by Siraj’s forces on 16 June, and the fort surrendered soon after. The garrison’s commander organised an escape, leaving behind 146 soldiers under the command of Holwell, a senior Company bureaucrat who had previously served as a military surgeon. The fort itself fell on 20 June.
The Black Hole of Calcutta
The “Black Hole of Calcutta” was a small dungeon within the old Fort William, where troops of Siraj-ud-Daulah reportedly held British prisoners of war following the fort’s capture on 20 June 1756.
- One of the prisoners, Holwell, later claimed that following the fort’s fall, British and Anglo-Indian soldiers and civilians were confined overnight in conditions so severely cramped that 123 of the 146 prisoners held died from suffocation, heat exhaustion, and crushing. The precise number of deaths, and indeed the overall accuracy of Holwell’s account, have remained the subject of considerable historical controversy.
Holwell’s Account: Holwell recorded the events following the fort’s fall in some detail. He described meeting personally with Siraj, who assured him “on the word of a soldier that no harm should come to us.” After a suitable place was sought to confine the 146 prisoners (Holwell included), the jailers locked them, at 8 pm, inside the fort’s prison room — measuring just 14 by 18 feet. When the “Black Hole” was finally reopened the next morning at 6 am, only 23 people remained alive.
- On the question of responsibility, Holwell believed the tragedy resulted from “revenge and resentment in the breasts of the lower jemadars,” to whose custody the prisoners had been delivered, provoked by casualties their own ranks had suffered during the siege — he was thus convinced that Siraj himself neither ordered the confinement in this manner nor was informed of the resulting deaths.
- After the prison was finally opened, the corpses were thrown into a ditch. Holwell and three others were sent onward as prisoners to Murshidabad; the remaining survivors gained their freedom only following the subsequent relief expedition led by Robert Clive.
- Holwell’s account directly prompted the British response: Robert Clive was despatched in October to retaliate.
Controversies Surrounding the Account:
- Some historians argue that, given the substantial number of non-combatants present when the fort fell, the precise number of deaths simply cannot be stated with real confidence.
- In 1915, the British scholar J.H. Little directly challenged Holwell’s claims in his article, “The ‘Black Hole’ — The Question of Holwell’s Veracity,” arguing that Holwell constituted a fundamentally unreliable witness.
- A floor area of just 267 square feet, critics note, could scarcely have physically contained 146 European adults.
- There exists a notable absence of independent corroboration — no source beyond Holwell’s own account appears to mention the incident at all, which critics find genuinely improbable given the scale of the event described; it seems unlikely that all trace of such an occurrence would have simply vanished from the wider historical record.
- Official records list only forty-three members of the garrison as missing from Fort William following the incident, suggesting the maximum possible death toll may have been considerably lower than Holwell claimed — though this objection is itself complicated by the fact that, per Holwell’s own account, not all of the 146 prisoners held were necessarily formal members of the garrison.
The British Response
When news of Calcutta’s fall reached Madras on 16 August 1756, the Council there immediately despatched an expeditionary force under Colonel Clive and Admiral Watson.
- A letter from the Council of Fort St. George stated that “the object of the expedition was not merely to re-establish the British settlements in Bengal, but also to obtain ample recognition of the Company’s privileges and reparation for its losses” — ideally without triggering a full-scale war. The letter further advised that any signs of dissatisfaction or ambition among the Nawab’s own subjects should be actively supported and encouraged.
- Clive assumed command of the land forces — comprising 900 Europeans and 1,500 sepoys — while Watson commanded the accompanying naval squadron. The fleet entered the Hooghly River that December.
- On 29 December, the force dislodged enemy troops from the fort of Budge Budge. Clive and Watson then advanced on Calcutta itself on 2 January 1757, and the garrison of 500 men surrendered after offering only scanty resistance.
- With Calcutta recaptured, the Council was formally reinstated, and a plan of action against the Nawab was prepared — the fortifications of Fort William were strengthened, and a defensive position was established to the north-east of the city.
The Bengal Campaign
On 9 January 1757, a force of 650 men under Captain Coote and Major Kilpatrick stormed and sacked the town of Hooghly, some 37 km north of Calcutta. On learning of this attack, the Nawab raised his own army and marched on Calcutta, arriving with the main body of his forces on 3 February, encamping just beyond the Maratha Ditch.
- Despite their recent successes, the British remained largely cut off from ongoing trade and resupply for the duration of the conflict — a situation genuinely favourable to a prolonged war from the Nawab’s own strategic perspective. Instead, Siraj made the significant strategic error of attempting to bring the conflict to a swift conclusion, advancing his substantial army — comprising some 40,000 horses, 60,000 infantry, and 50 elephants — directly against Calcutta, and beginning preparations for a full assault on the city.
- Clive decided to launch a pre-emptive strike, a decision that proved decisively successful — the Nawab’s army broke apart in disarray, with many soldiers fleeing outright. The British lost 57 men in the engagement; the Nawab’s forces, 1,300. Faced with this unexpected defeat, Siraj-ud-Daulah capitulated and opened negotiations with the British. On 9 February, the resulting peace agreement — the Treaty of Alinagar — was formally signed.
Treaty of Alinagar (9 February 1757)
The attack had genuinely frightened the Nawab into concluding this treaty with the Company. It was named for the short-lived title, “Alinagar,” which Siraj had bestowed upon Calcutta following his earlier capture of the city.
Signed between Robert Clive and Siraj-ud-Daulah, the treaty’s key terms included:
- The Nawab agreed to formally restore all of the Company’s factories.
- The Nawab agreed to recognise all provisions of Emperor Farrukhsiyar’s 1717 farman.
- All British goods passing through Bengal would be entirely exempt from duties.
- The British would face no hindrance in fortifying Calcutta, or in minting their own coins there.
The Nawab withdrew his army back to Murshidabad, and the signing of this treaty was itself one of the key events that set the stage for the coming Battle of Plassey.
For the moment, peace prevailed — but it was destined not to last. Clive had, in fact, come to Bengal with ambitions extending well beyond the mere recapture of Calcutta. Even before setting sail, he had written: “this expedition will not end with the retaking of Calcutta only — and that the Company’s estate in these parts will be settled in a better and more lasting conditions than ever.” Having already demonstrated his considerable military skill, Clive now turned to a rather different talent — calculated political intrigue. Over the following months, he set about systematically plotting the downfall of every remaining rival to British power in Bengal. His immediate intention was to safeguard the Company’s commercial profits, not to establish outright rule over Bengal — but this course of action would inadvertently set in motion a chain of events that would ultimately make the British masters of one of the wealthiest regions on earth, oceans away from their own homeland.
The Sacking of Chandernagore
Concerned by the approach of the French general Bussy towards Bengal, and by the broader outbreak of the Seven Years’ War in Europe, the Company turned its attention to the emerging French threat within Bengal itself. Clive planned to capture the French settlement of Chandernagore, some 32 km north of Calcutta — but first needed to determine whose side the Nawab would take should such an attack occur. Siraj’s evasive replies were interpreted by Clive as tacit assent to proceed.
- Clive commenced hostilities against Chandernagore on 14 March. The French had hoped for reinforcement from Nawab’s forces stationed at Hooghly, but the governor of Hooghly, Nand Kumar, had been bribed to remain inactive, effectively blocking any such support. Though well-defended, the fort’s blockade was forced by Admiral Watson’s squadron on 23 March, and on 24 March, the French raised a flag of truce.
- After thoroughly plundering Chandernagore, Clive chose to disregard his orders to return to Madras, remaining instead in Bengal and moving his army to the north of Hooghly town.
- The Nawab was deeply infuriated upon learning of this attack, and his earlier hostility towards the British was fully rekindled — though he now recognised the pressing need to strengthen his own position through fresh alliances against them. Simultaneously plagued by fears of attack from the north by Afghan forces under Ahmad Shah Durrani, and from the west by the Marathas, Siraj found himself unable to deploy his full military strength against the British alone.
- Siraj accordingly opened secret negotiations with Jean Law, chief of the French factory at Cossimbazar, and with Bussy separately, while also moving a substantial division of his own army, under Rai Durlabh, to Plassey, on the island of Cossimbazar.
The Conspiracy Against Siraj
In Europe, the Seven Years’ War (1756–1763) was raging between France and England — and, mirroring this rivalry, the French East India Company despatched a small contingent to fight alongside the Nawab against the British. Siraj-ud-Daulah thus commanded a numerically superior force overall. Worried both about being significantly outnumbered and about French assistance reaching the Nawab, the British formed a secret conspiracy with Mir Jafar — Siraj’s own demoted army chief — along with several other disaffected figures, including Yar Lutuf Khan, the Jagat Seths (Mahtab Chand and Swarup Chand), Omichund, and Rai Durlabh.
- Popular discontent against the Nawab had, by this stage, flourished openly within his own court. The Seths, Bengal’s leading bankers and traders, lived in perpetual anxiety over the safety of their wealth under Siraj’s reign — a marked contrast to the relative security they had enjoyed under Alivardi Khan.
- William Watts, the Company’s representative at Siraj’s court, informed Clive of an active court conspiracy aimed at overthrowing the Nawab, involving Mir Jafar, Rai Durlabh, Yar Lutuf Khan, the Jagat Seths, Omichund, and several serving army officers.
- Upon being formally approached by Mir Jafar, Clive referred the matter to the Select Committee in Calcutta on 1 May, which duly passed a resolution supporting the proposed alliance. A formal treaty was subsequently drawn up between the British and Mir Jafar, promising to raise him to the Nawabship in exchange for his support against Siraj on the field of battle, along with the payment of substantial sums to the British as compensation for the earlier attack on Calcutta.
- Mir Jafar and the Seths were keen to keep this confederacy secret from Omichund — but when he nonetheless discovered it, he threatened to expose the entire conspiracy unless his own share of the proceeds was increased to three million rupees. On hearing this, Clive proposed a characteristically devious solution to the Committee: drawing up two separate treaties — a genuine one, on white paper, making no reference whatsoever to Omichund, and a second, fraudulent one, on red paper, containing Omichund’s demanded terms, purely to deceive him.
The Battle of Plassey
On 14 June, Clive formally sent his declaration of war to Siraj. On 15 June, after ordering an attack on Mir Jafar’s palace out of suspicion regarding his alliance with the British, Siraj managed to extract a promise from Mir Jafar that he would not join the British in the coming battle. Siraj then ordered his entire army to march to Plassey — but his troops refused to leave the city until their outstanding pay arrears were settled, delaying the army’s arrival at Plassey until 21 June.
On 23 June 1757, the decisive Battle of Plassey was fought between the combined armies of Siraj-ud-Daulah (bolstered by French assistance) and Clive’s forces. The confrontation unfolded on a cloudy morning, north of Plassey village, on the bank of the Bhagirathi River. There could be no meaningful comparison between the two opposing forces in terms of raw numbers: the Nawab’s army numbered 50,000 infantry and 28,000 cavalry, against Clive’s modest force of just 3,000 men, including English soldiers.
- Of the Nawab’s three army divisions, one was commanded directly by Mir Jafar. From the very outset of the battle, Mir Jafar, Rai Durlabh, and Yar Lutuf Khan assembled their respective troops near the battlefield but deliberately made no move to actually engage.
- Only two generals — Mohan Lal and Mir Madan — fought genuinely and desperately on the Nawab’s behalf. When Mir Madan fell dead on the field, Siraj lost his nerve entirely. For hours, the overall course of the battle remained genuinely undecided. Mir Jafar advised the Nawab to order Mohan Lal to halt the fighting and withdraw.
- Siraj, already deeply distrustful of his own generals and having earlier received a warning of impending defeat from his court astrologer (quite possibly himself bribed), finally lost his nerve entirely once Mir Jafar advised retreat. Siraj fled the battlefield on a fast camel, and his thoroughly demoralised army followed suit soon after.
Siraj-ud-Daulah fled the battlefield seeking to save his own life, but was subsequently killed by Miran, the son of Mir Jafar. Mir Jafar then entered Murshidabad as the new Nawab of Bengal.
Aftermath of Plassey
Under the treaty concluded between the British and Mir Jafar, the British acquired outright possession of all land within the Maratha Ditch, plus a further 600 yards beyond it, along with the zamindari of the 24 Parganas of Bengal.
- Beyond confirming the 1717 farman, the treaty further required the payment of 22 million rupees in restitution to the British — including donations to the naval squadron, army, and Select Committee — to compensate for their losses.
- However, since Siraj-ud-Daulah’s actual treasury proved far smaller than anticipated, a council held with the Seths and Rai Durlabh on 29 June determined that only half the promised sum would be paid immediately — two-thirds in coin, and one-third in jewels and other valuables.
- As this council concluded, Omichund was informed that he would, in fact, receive nothing at all under the treaty’s actual terms — news that reportedly drove him insane.
In 1760, Clive returned home to England, his fame widely celebrated across the country as the “Victor of Plassey” and the founder of British rule in India; the British government honoured him with the title of Lord.
It must nonetheless be recognised that, at this precise point, the British were neither actually in control of Bengal, nor did they yet harbour any particular desire to be. Their primary object remained the securing of favourable trading rights. While the British had certainly played a decisive role in events, this was, fundamentally, a court coup in which Mir Jafar had seized power from Siraj-ud-Daulah — and Mir Jafar himself still remained the commander of the largest single army in Bengal. Clive, moreover, had no genuine intention of directly ruling Bengal — an ambition that made little practical sense for a mercantile trading company to pursue. As Clive himself wrote at the time: “So large a sovereignty may possibly be an object too extensive for a mercantile company.”
Effects and Significance of the Battle of Plassey
(Political, economic, and military impact)
The true significance of the Battle of Plassey lies in the fact that Bengal now came under British domination and, eventually, outright oppression. From a purely military standpoint, the battle itself was not, in truth, particularly significant — it amounted to little more than a minor skirmish, with the English army demonstrating no genuine battlefield superiority. Victory came largely because the Nawab’s own camp effectively deserted him, allowing Clive’s political and diplomatic skill to triumph almost entirely without serious fighting. As some historians have observed, it was, in essence, “a transaction in which the bankers of Bengal and Mir Jafar sold out the Nawab to the English.”
- The Battle of Plassey was directly followed by the sustained plunder of Bengal, as the region’s vast resources were placed effectively at the Company’s disposal. Substantial sums flowed to the Company in the battle’s immediate aftermath, and Bengal — regarded as India’s most prosperous province, both industrially and commercially — provided the British with the vast wealth ultimately used to fund their conquest of the Deccan and the extension of their influence across North India.
- Before Plassey, the English Company had been merely one among several European trading companies operating in Bengal, subject to substantial taxes imposed by the Nawabs. After Plassey, the English effectively monopolised Bengal’s trade and commerce outright. The French were never able to recover their lost position — in 1759, the British defeated a considerably larger French garrison at Masulipatam, securing the Northern Circars in the process — while the Dutch, too, were separately defeated. Having moved from commerce to outright administrative control, Plassey proved to be a battle of genuinely far-reaching consequence for the wider fate of India.
- As the plundered wealth of Bengal began arriving in London, its economic effects appear to have been almost immediate — historians broadly agree that Britain’s Industrial Revolution effectively began around 1770, little more than a decade after Plassey was fought in 1757.
- The condition of Bengal’s common people, meanwhile, gradually deteriorated under the Nawab’s weakened authority. Growing lawlessness and the relentless economic exploitation practised by Company servants steadily broke the economic backbone of a Bengali population that had once enjoyed genuine prosperity.
- The British subsequently built and trained an army of native Indian sepoys, who went on to serve the Company’s continuing ambitions of colonial expansion. The East India Company also moved to protect its increasingly valuable Indian territories by acquiring a network of buffer colonies — including Singapore, Penang, Burma, Nepal, and Malacca. British advances across Asia were further aided by superior military technology, modern artillery, and naval power.
- The Battle of Plassey ushered in an entirely new era in Indian history — a genuine turning point not merely for Bengal, but for the whole subcontinent. It has, quite rightly, been remarked that Plassey marked both the end of one historical epoch and the beginning of another. The conflict at Plassey also proved crucial to the East India Company’s eventual triumph over its French rivals more broadly.
Mir Jafar (1757–1760)
Following the Battle of Plassey, Mir Jafar became Nawab of Bengal in name only. He remained entirely dependent on the British both to maintain his own position within Bengal and to secure protection against potential foreign invasion — an English army of some 6,000 troops was permanently maintained in Bengal specifically to support him, while genuine administrative power passed steadily into Company hands.
- Mir Jafar proved a genuinely incompetent ruler, and throughout his reign, real authority remained firmly with the English. He faced severe and recurring financial crises, as Company servants steadily extracted money from him through a variety of means, and he had, separately, committed to paying Clive a substantial personal sum as a mark of gratitude for his elevation.
- The English Company continued pressing him for further instalment payments, leaving Mir Jafar increasingly restless under mounting financial pressure and the steadily growing supremacy of the English within his own domain. In this climate, the Dutch hatched a conspiracy with Mir Jafar against the British in 1759.
The Battle of Chinsura, or Bedara (1759)
Mir Jafar had come to feel that his position as a subordinate to the British was no longer tolerable, and he began actively encouraging the Dutch to advance against the British in an effort to eject them from Bengal entirely. In late 1759, the Dutch despatched seven large ships carrying some 1,400 men from Java to Bengal, under the ostensible pretext of reinforcing their own Bengal settlement at Chinsura — even though Britain and Holland were not formally at war with one another at this time.
- Clive, however, initiated immediate offensive operations, decisively defeating the considerably larger Dutch force on 25 November 1759, at the Battle of Chinsura. In doing so, Clive also symbolically avenged the earlier Amboyna Massacre — (the 1623 torture and execution, on Ambon Island in present-day Indonesia, of twenty men, ten of them in English East India Company service, by agents of the Dutch East India Company, on accusations of treason — itself a product of the intense spice-trade rivalry between the English and Dutch companies).
- That same year, Ali Gauhar, eldest son of the reigning Mughal Emperor, rose in revolt against his own father. Seeking refuge, he besieged Patna in Bihar with assistance from Shuja-ud-Daulah, Nawab of Awadh. Unable to face Ali Gauhar’s forces alone, Mir Jafar sought English assistance, and with British help, successfully defeated the Mughal army. In gratitude for this support, Clive was granted the right to collect revenue from South Calcutta — an arrangement popularly known as “Clive’s Jagir.” This further arrangement cost Mir Jafar an additional annual loss of some thirty thousand rupees.
When Clive subsequently returned to England due to ill health, he was rewarded with an Irish peerage as Lord Clive, Baron of Plassey, and also obtained a seat in the British House of Commons. Following his departure, Company servants — both collectively and individually — grew increasingly uncontrollable in their pursuit of personal enrichment through corrupt means, leaving Mir Jafar utterly exhausted by continual demands for payment, his treasury effectively empty.
Mir Kasim (1761–1763)
Mir Jafar, worn down by the increasingly exacting demands of the English in Bengal, found himself unable to meet further British demands with an empty treasury. As his interest in effective governance steadily declined, the people of Bengal grew increasingly contemptuous of his evident inability to administer the province smoothly. Under these circumstances, the English began actively seeking an alternative successor — settling on Mir Kasim, Mir Jafar’s own son-in-law, who promised to pay the British considerably more than his father-in-law had managed.
- By this point, Clive had already departed for England in 1760, and Vansittart had become Governor of Bengal. Vansittart compelled Mir Jafar to formally abdicate in favour of Mir Kasim, who was eager to assume the Nawabship. In gratitude for British support, Mir Kasim ceded the districts of Burdwan, Chittagong, and Midnapur to individual members of the Governing Council.
- Mir Kasim proved considerably more talented, energetic, and ambitious than his father-in-law, ruling from 1761 to 1763. He had no appetite for functioning as a mere British puppet, and consistently sought to keep himself free from undue English influence — for precisely this reason, he shifted his capital from Murshidabad to Monghyr.
- To strengthen his position against the English, he thoroughly reorganised his troops and established factories dedicated to the manufacture of arms, training his army along Western military lines, and worked systematically to clear the state’s outstanding financial arrears in order to replenish his depleted treasury.
- Despite repeated complaints from Vansittart, Mir Kasim consistently refused to reduce the size of his military forces — measures that, taken together, gradually incurred growing English displeasure.
The Abuse of Dastak
Dastak was the formal trade permit granted to the East India Company by the Mughal government. Under the terms of Farrukhsiyar’s 1717 farman, the Company was entitled to trade throughout Bengal without paying normal customs duty — a right formally exercised through the issuance of dastaks, authorising Company agents to trade duty-free within the province.
- According to the terms of the 1717 farman, this valuable exemption applied strictly to the Company itself, and was explicitly not meant to extend to the Company’s private traders. In practice, however, private Company traders routinely abused this free-trade privilege by simply producing dastaks at government chowkies (checkpoints) — though local chowkidars had ample reason to suspect that most such dastaks were being used merely as convenient cover for entirely private trading activity. The Company itself openly sold dastaks at considerable prices, not only to European private traders but to native merchants as well, with corrupt British officials frequently trading their dastaks to Indian merchants directly in exchange for money — a practice that substantially eroded the Nawab’s own legitimate revenue.
- As a result, the government steadily lost revenue on one hand, while native merchants simultaneously lost business through fundamentally unequal competition against the Company and its private traders on the other. Siraj-ud-Daulah’s own earlier policy against dastak abuse had, notably, been one of the important underlying causes of his own conflict with the Company.
- Mir Kasim strongly opposed dastak abuse, since other local merchants were consequently forced to pay taxes amounting to as much as 40% of their revenue, placing them at a severe competitive disadvantage.
- Unable to persuade the Company to curb this abuse through negotiation, Mir Kasim ultimately abolished all inland duties altogether, in a bid to save local merchants from ruin. This decisive step directly eliminated the significant trading advantage British merchants had long enjoyed, and hostilities between Mir Kasim and the Company steadily built as a result. In 1763, Mir Kasim’s forces overran Company offices at Patna, killing several Europeans, including the Company Resident there.
Warren Hastings and the Trading Abuses: In 1758, Warren Hastings was appointed British Resident at Murshidabad, the Bengal capital. Hastings, personally troubled by what he uncovered, conducted a formal investigation into ongoing trading abuses across Bengal, alleging that certain European and British-allied Indian merchants were exploiting the situation for substantial personal enrichment. Widespread fraud and illegal trading were being conducted by individuals travelling under the unauthorised protection of the British flag, secure in the knowledge that local customs officials would be too intimidated to interfere. Hastings believed this pattern was bringing genuine shame upon Britain’s broader reputation, and urged the authorities in Calcutta to intervene decisively. The Council, however, ultimately rejected his proposed reforms, and Hastings faced fierce criticism from fellow Council members — many of whom had themselves profited handsomely from precisely this abusive trade. With little ultimately done to address the underlying problem, Hastings began seriously considering resignation, a decision delayed only by the subsequent outbreak of fresh fighting in Bengal. He formally resigned in December 1764 and sailed for Britain.
The Battle of Buxar
The seeds of the Battle of Buxar were sown directly in the aftermath of Plassey, once Mir Kasim became Nawab of Bengal — the war’s primary underlying cause being the escalating conflict between the English and Mir Kasim himself.
- As already noted, Mir Kasim proved an able and capable Nawab, but one the English wished to keep as a mere puppet ruler. He, however, consistently sought to keep himself free of British influence, undertaking a series of genuine administrative reforms: reducing expenditure on administration and palaces, manufacturing firearms and guns domestically, ensuring the regular payment of salaries, imposing new taxes, and shifting his capital from Monghyr back to Murshidabad — reforms that considerably annoyed British nobles and officials stationed in Bengal. His decision to abolish inland taxes altogether, in direct response to British dastak abuse, further infuriated the Company.
- These accumulating tensions led to a series of direct conflicts between Mir Kasim and the English. He was defeated in three successive battles (fought between June and September 1763) prior to the decisive engagement at Buxar, ultimately compelling him to flee to Allahabad, where he sought out Shuja-ud-Daulah.
Meanwhile, having recently acquired power as Mughal Emperor, Shah Alam II similarly hoped to combine several states into a single, physically stronger imperial entity — one that included Bengal (encompassing present-day Bengal, Bihar, and Orissa). Unable, however, to overpower the British on his own, he had taken shelter with Shuja-ud-Daulah, Nawab of Awadh, who himself remained determined to destroy growing English supremacy in Bengal.
Thus, one of the principal causes of the resulting hostilities was a shared contest over the future control of Bengal itself. Mir Kasim, Shuja-ud-Daulah, and Shah Alam II ultimately joined forces to fight the English, seeking to establish their combined sovereignty over the whole of Bengal and to curtail growing British power in the region.
The Battle
The Battle of Buxar was fought on 23 October 1764, at the battleground of Katkauli, some 6 km from Buxar, then within Bengal’s territorial boundaries. It pitted the forces of the British East India Company, commanded by Hector Munro, against the combined armies of Mir Kasim (Nawab of Bengal), Shuja-ud-Daulah (Nawab of Awadh), and Mughal Emperor Shah Alam II.
- The Mughal-led coalition camp was internally fractured by an ongoing quarrel between Shah Alam II and Shuja-ud-Daulah, while Mir Kasim himself remained genuinely reluctant to actively engage British forces. This fundamental lack of basic coordination among the three desperate allies proved decisively responsible for their eventual, comprehensive defeat.
- Following the battle, Mir Kasim fled to the North-West, where he later died. Shah Alam II abandoned Shuja-ud-Daulah and instead sought shelter directly within the British camp. Shuja-ud-Daulah continued attempting to resist the British until 1765, without success, eventually fleeing to Rohilkhand.
Clive was in England when the Battle of Buxar was fought and decisively won by British forces. In 1765, he returned to India, styled as Lord Clive, to serve for a second term as Governor-General of Bengal. By this stage, the British had genuinely demonstrated their outright military supremacy in India — Buxar proved to be a far more toughly contested engagement than Plassey, which had, by contrast, been won substantially through deceit rather than raw military strength.
The Battle of Buxar concluded with the Treaty of Allahabad.
Treaty of Allahabad (1765)
The most significant outcome of Buxar was the Treaty of Allahabad, which in fact comprised two separate treaties, both signed at Allahabad.
First Treaty — between the East India Company (represented by Lord Clive) and Mughal Emperor Shah Alam II, who had by this point submitted to British authority:
- The Mughal Emperor formally granted Diwani rights (fiscal administration and tax-collection authority) over Bengal, Bihar, and Orissa to the East India Company, allowing the Company to collect revenue directly from the population of these provinces. Nizamat rights (police and judicial authority) remained with the Nawab of Bengal.
- In exchange for these rights, the Company agreed to pay an annual tribute of 26 lakh rupees to the Mughal Emperor.
- The districts of Kora and Allahabad were returned to direct Mughal control.
Second Treaty — between the East India Company (Lord Clive) and Shuja-ud-Daulah, Nawab of Awadh:
- Awadh itself was restored to Shuja-ud-Daulah, though the districts of Allahabad and Kora were taken from him.
- The Nawab of Awadh was required to pay 53 lakh rupees in war indemnity to the British.
- The zamindari of the Banaras region was granted to Balwant Rai.
- A permanent English Resident would henceforth be stationed at Lucknow, with the Nawab bearing all associated expenses.
- The Nawab further entered into an offensive and defensive alliance with the Company, binding him to provide gratuitous military assistance to the Company whenever required, with the Company reciprocally agreeing to help defend the Nawab’s frontier with troops, provided he covered the cost of their maintenance.
Through this single settlement, Clive personally determined the political fate of almost half of Northern India.
Effect and Significance of the Battle of Buxar
The seeds of British imperialism first sown at Plassey truly flowered only after Buxar — a fact that arguably makes this later battle historically the more significant of the two. Buxar finally and decisively consolidated British rule across Bengal: the Nawab was reduced to a mere figurehead, the Company embarked on largely unchecked exploitation of Bengal’s wealth, the Nawab of Awadh became a genuinely submissive ally, and the Mughal Emperor himself was reduced to subsisting on a fixed allowance paid by the Company.
- The Battle of Buxar proved genuinely decisive, resulting directly in the establishment of British sovereignty across Bengal. It exposed, in stark relief, the underlying political weaknesses and military shortcomings of the native Indian powers, alongside the fundamental hollowness that now characterised the once-mighty Mughal Empire. Buxar demonstrated conclusively the military superiority of the English forces, and exposed the deep-seated weaknesses of native military organisation more broadly. In this sense, it arguably carried greater long-term significance than Plassey, which, after all, had not been won through genuine military strength but through calculated deceit. Moreover, while Plassey had merely defeated the Nawab of Bengal, Buxar defeated the Mughal Emperor himself, together with the considerable military power of Awadh.
- The Treaty of Allahabad effectively established Company rule over roughly one-eighth of the entire Indian subcontinent, at a single decisive stroke. While the Battle of Plassey had secured an initial foothold for the Company in India, it was Buxar that truly established the British as the region’s dominant political force — Buxar, in effect, completed the essential work that Plassey had merely begun.
- Following Buxar, the East India Company achieved outright dominance across the whole of Bengal. The Mughal Emperor himself came fully under British control, and all duties and revenues from India’s single most prosperous province — Bengal, Bihar, and Orissa combined — flowed directly to the Company, which thereby acquired genuine administrative power through its control of the army, finances, and revenue collection alike.
- With Bengal’s accumulated wealth now securely at their disposal, the British were positioned to fund the conquest of further Indian regions, firmly establishing their supremacy across the eastern parts of the subcontinent. Buxar, in the final analysis, “riveted the shackles” of Company rule firmly upon Bengal — the earlier verdict of Plassey was thus fully confirmed and made permanent by the subsequent English victory at Buxar.
The Dual System of Administration in Bengal (1765–1772)
Under this arrangement, formal administrative authority was nominally divided between the Company and the Nawab — though genuine power remained, in practice, concentrated entirely in Company hands. This deliberately complex system remained in operation throughout the period from 1765 to 1772.
- Having secured Diwani rights from the Mughal Emperor, Clive delegated the practical responsibility of revenue collection to Indian officials, appointing two deputy diwans: Muhammad Reza Khan for Bengal, and Raja Shitab Roy for Bihar.
- Nizamat functions (police and judicial authority) remained formally with the Nawab, though these too were, in practice, increasingly assumed by the Company. For these functions, the British additionally designated Muhammad Reza Khan as Deputy Nazim — a position that could not be removed from him without the Company’s own explicit consent.
- Thus, although administrative responsibility — encompassing both Diwani and Nizamat functions — was theoretically divided between the Company and the Nawab, and exercised in practice through Indian intermediary agencies, the Company itself steadily acquired genuine, effective power throughout the system.
This arrangement proved considerably advantageous for the Company, in that it secured genuine power while formally avoiding direct administrative responsibility or accountability. In 1772, Warren Hastings finally brought this Dual System to an end, replacing it with direct Company administration.


