Battle of Plassey 1757: How Clive and the Conspirators Took Bengal

On the morning of 23 June 1757, on a flat plain beside the Bhagirathi river near the village of Palashi, about 150 kilometres north of Calcutta, two armies faced each other across one of the widest gaps in military history. Robert Clive commanded roughly 3,000 men of the British East India Company — some 800 Europeans, about 2,100 Indian sepoys, and a handful of guns. Arrayed against him, at least on paper, stood the army of Siraj-ud-Daulah, the young Nawab of Bengal: some 50,000 soldiers, including 16,000 or more cavalry and more than fifty heavy cannon. By evening the Nawab had fled the field, his army had dissolved, and a joint-stock trading company had become the effective master of the richest province of the Mughal Empire. Yet Plassey has always been an awkward battle to describe, because so much of it was settled before the first cannon fired. This article tells the story of what happened — and of how differently it has been told.

Bengal under Siraj-ud-Daulah

Bengal in 1756 was the prize of Asia: a delta of rice, silk, cotton piece-goods and saltpetre whose revenues sustained the court at Murshidabad and drew every European trading company to its rivers. The province had been governed with increasing independence from Delhi by a line of nawabs, the last of them Alivardi Khan, who died on 10 April 1756. His designated heir was his grandson Siraj-ud-Daulah, about twenty-three years old, who succeeded him as Nawab of Bengal, Bihar and Orissa. The inheritance described in our account of Subah Bengal — a wealthy, effectively autonomous province under a weakening empire — was now in the hands of a young ruler surrounded by rivals.

The accession was contested from the start. Siraj's aunt Ghaseti Begum, the courtier Rajballabh, his cousin Shaukat Jang and, most dangerously, Mir Jafar Ali Khan — the bakhshi, or commander-in-chief of the Nawab's army — all resented or feared the new Nawab. Siraj moved quickly and harshly against his rivals, humiliating men who had expected to manage him. In doing so, historians generally agree, he pushed a group of powerful courtiers, soldiers and bankers toward the one outside force capable of removing him: the English East India Company.

The road to war: Fort William and the Black Hole

Siraj's quarrel with the Company was specific, and on its merits it was far from baseless. As Banglapedia's account of his reign sets out, he laid three charges against the English. First, they were strengthening the fortifications of Fort William at Calcutta without his permission, pleading the threat of war with France. Second, they grossly abused the dastaks — the duty-free passes granted to the Company under the Mughal emperor's farman of 1717 — covering their servants' private trade with them and starving his treasury of customs revenue. Third, they had sheltered Krishnadas, the son of Rajballabh of Dhaka, who had fled with government funds. The Company answered evasively; its governor insulted the Nawab's envoy. In June 1756 Siraj struck: he seized the Company's factory at Kasimbazar on 4 June and stormed Calcutta, taking Fort William on 20 June. The city was renamed Alinagar.

It was on the night of 20–21 June 1756 that the event occurred which would dominate British memory of the war: the Black Hole of Calcutta. The standard British account comes from a single witness, John Zephaniah Holwell, a Company official among the prisoners, whose narrative appeared in 1758. Holwell claimed that 146 prisoners were crammed overnight into the fort's small punishment cell — a room of about fourteen by eighteen feet — and that 123 of them died of suffocation and heat, only 23 surviving.

Those numbers must be labelled for what they are: disputed. As early as 1915 the scholar J. H. Little attacked Holwell's veracity; the historian R. C. Majumdar later called the story baseless; and modern estimates are far lower. Stanley Wolpert and the Indian scholar Brijen K. Gupta both worked from figures of about 64 people confined and about 21 survivors, while D. L. Prior calculated that only 43 men of the Fort William garrison were missing or dead in total, for all causes. Banglapedia's verdict is blunt: the figure of 123 dead is "manifestly an exaggeration". Percival Spear concluded that some incident like the one Holwell described probably did occur, through ignorance and confusion among the Nawab's underlings, but that the numbers are unknowable. Holwell himself acquitted Siraj of ordering the confinement, blaming subordinate officers, and no reputable modern account treats the Nawab as having commanded it. What is certain is the story's function: retold in Britain for generations, the Black Hole made Siraj a monster in the English imagination and supplied a moral warrant for what followed.

Alinagar and the turn to conspiracy

Clive, sent up from Madras with Admiral Watson's fleet, retook Calcutta in January 1757. Siraj marched down with his army, but the result was a negotiation, not a battle: by the Treaty of Alinagar of 9 February 1757 the Company recovered its privileges and compensation was promised. Clive then turned on the French, capturing their settlement at Chandernagar in March 1757 and destroying the counterweight Siraj might have used against the English. The Nawab, threatened in his rear by the Afghan invader Ahmad Shah Durrani and by the Marathas, could not concentrate his strength — and at Murshidabad his own court was coming apart.

Out of that disintegration came the conspiracy. Its core was an alliance between the Company and the disaffected grandees of Bengal: Mir Jafar, who wanted the throne; Rai Durlabh, the diwan or finance minister; the commander Yar Lutuf Khan; and the Jagat Seths, the great banking house of Murshidabad, headed by Mehtab Chand, which financed the Bengal government itself and feared that a victorious, hostile Nawab would destroy the European trade on which much of its business rested. The negotiations were run by William Watts, the Company's resident at the court, and they produced a formal secret treaty, signed in early June 1757. Mir Jafar would hold his army out of the coming battle and be made Nawab. In return the Company was to receive one crore of rupees — ten million — as compensation, with fifty lakh more for the European inhabitants of Calcutta, twenty lakh for its Indian inhabitants and seven lakh for the Armenians, besides fifty lakh for the army and navy under a separate arrangement. The French factories of Bengal, Bihar and Orissa were to be handed over and the French barred from returning; and the Company was to receive the zamindari of the land south of Calcutta as far as Kulpi — the district afterwards known as the 24 Parganas.

The plot's most squalid episode concerned Omichund, a wealthy merchant who acted as an intermediary and who, scenting his own indispensability, threatened to betray the whole design to Siraj unless he was guaranteed a large personal payment. Clive's answer was a fraud within the conspiracy: two versions of the treaty were drawn up, a genuine one on white paper that said nothing of Omichund, and a fictitious one on red paper that granted his demand. Admiral Watson refused to sign the false treaty, and his signature was forged on it. When, after the battle, Omichund was shown the white treaty and told there was nothing in it for him, the deception was complete. Clive later had to defend the episode before a parliamentary inquiry — an early sign that the morality of Plassey would be argued over for centuries.

The battle: 23 June 1757

Clive's march on Murshidabad brought the armies together at Palashi, in a mango grove by the river. His own council of war had voted against fighting; Clive, after an hour alone, overruled it — or so the famous story, told by his early biographers, runs. The Nawab's host, some 50,000 strong with its 53 heavy guns and a small French artillery detachment under St Frais, vastly outnumbered the Company's roughly 3,000 men and ten guns.

The fighting that followed was real but uneven. The morning passed in a cannonade. Around midday a violent rainstorm burst over the field: the Company's gunners, by the standard accounts, covered their powder and guns with tarpaulins, while the Nawab's artillerymen did not, and much of the Bengal powder was soaked. When the rain eased, the loyal Mir Madan — one of the few of Siraj's commanders who was actually fighting — advanced and was struck down by a cannonball. Mohanlal, commanding the infantry, pressed forward and was then ordered back. Meanwhile the divisions of Mir Jafar, Rai Durlabh and Yar Lutuf Khan, the largest part of the Nawab's army, stood motionless on the flank, honouring the treaty rather than their sovereign. Word came to Siraj from Mir Jafar's direction advising retreat; the young Nawab, his nerve gone, mounted a camel and fled toward Murshidabad. His army, seeing the royal standard depart, dissolved behind him.

The casualty figures tell their own story about the kind of battle Plassey was. The Company reported 22 killed and 50 wounded (some accounts give 27 killed), while the Nawab's army lost perhaps 500 killed and wounded — most of them in the loyal divisions that had actually engaged. Siraj was captured within days and, on 2 July 1757, was killed on the orders of Mir Jafar's son Miran. Mir Jafar entered Murshidabad and took the throne he had purchased.

Aftermath: a throne installed and a treasury emptied

Mir Jafar discovered at once what the treaty meant. Britannica's summary is unsparing: he "was no more than a puppet ruler", ceding control of Bengal to the British through successive treaties. The compensation clauses fell due immediately, and the Murshidabad treasury could not meet them in full; a first instalment of seventy-five lakh rupees — nearly a million pounds — was loaded onto some 200 boats and floated down to Calcutta under escort. Counting everything paid out to the Company and its servants, William Dalrymple, summarising the records in The Anarchy, puts the sum at about £1,238,575, with perhaps £2.5 million handed over by the Murshidabad nawabs in "presents" and payments between 1757 and 1765; Clive himself put the total nearer £3 million.

The private fortunes were the scandal of the age. Clive took a personal share commonly estimated by his biographer John Keay at £234,000 in cash — Dalrymple gives at least £170,000 from the 1757 payments alone — and in 1759 accepted from Mir Jafar a jagir consisting of the quit-rent of the very 24 Parganas the Company had acquired, worth roughly £27,000 to £30,000 a year for life: the Company thus paid its own servant for the right to collect revenue on its own land. The 24 Parganas grant itself, the zamindari of the district south of Calcutta, gave the Company its first territorial foothold as a Bengal landlord.

Beyond the loot lay the structural change later generations would call the drain of wealth. Before 1757 the Company had paid for Indian goods largely with imported silver — some £6 million in bullion shipped out in the first half of the century. After Plassey, as Dalrymple notes, very little bullion was sent at all: Bengal's own revenues were used to buy Bengal's goods for export, and the province that had absorbed the world's silver became the source from which wealth flowed out with no return. Within five years Mir Jafar, unable to satisfy his paymasters, was deposed in favour of his son-in-law Mir Qasim — whose attempt to rule independently set Bengal on the road to open war.

From Plassey to Buxar and the Diwani

That war came at Buxar on 22 October 1764, where Hector Munro's Company army defeated a genuinely united opposition: Mir Qasim, Shuja-ud-Daula of Awadh and the Mughal emperor Shah Alam II himself. Buxar was the hard-fought military victory that Plassey had not been — Britannica indeed judges Buxar, rather than Plassey, the decisive battle for Bengal. Its settlement, the Treaty of Allahabad of 12 August 1765, converted military supremacy into constitutional form: Shah Alam granted the Company the Diwani of Bengal, Bihar and Orissa — the right to collect the land revenue and administer civil justice over tens of millions of people — in return for an annual tribute of twenty-six lakh rupees. The trading company had become the revenue authority of the empire's richest province, and the era whose political line runs from Plassey through the Partition of Bengal 1905 to the modern map of Bengal had begun.

How Plassey has been remembered

No event in Bengal's history carries a heavier load of story. In Bengali and Urdu alike, "Mir Jafar" became a common noun for a traitor, the subcontinent's equivalent of "quisling", and Siraj — brutalised in early British writing, not least through Holwell's Black Hole narrative — was recast in nationalist memory as a martyred patriot, the last independent ruler of Bengal. The simple morality play, hero Nawab and villain general, served both imperial and nationalist tellings, in opposite directions.

Modern historians have complicated every element of it. The battle itself, many now argue, is better understood as a political and commercial transaction ratified by a skirmish: with the largest divisions of the Nawab's army under orders not to fight, the outcome was substantially arranged in the treaty negotiations of May and June 1757 rather than won on the field. On the conspiracy's origins, scholars divide. The view associated with P. J. Marshall and Rajat Kanta Ray treats the plot as essentially Indian-born — Bengal's internal political and economic crisis drawing the British in as partners of the Murshidabad elite. Against this, Sushil Chaudhury's The Prelude to Empire: The Plassey Revolution of 1757, built on British, Dutch and French archives, argues that the conspiracy was engineered and encouraged by the British themselves, who worked until the last moment to hold their Indian partners to the "project" of revolution, because the private-trade fortunes of the Company's servants stood in crisis and only a political revolution could save them. Chaudhury even recovers the telling detail, from the contemporary Persian history the Muzaffarnamah, that Siraj — warned of the plot — chose to reconcile with Mir Jafar after the general swore on the Quran to be faithful: the Nawab was not simply a fool who failed to see the trap.

What no serious account now disputes is the consequence. In a single monsoon season of 1757 a corporation acquired the power to make and unmake the rulers of Bengal; within eight years it held the Diwani, and the revenues of Bengal were underwriting British expansion across India. Whether Plassey is labelled a battle, a conspiracy or a revolution, it remains the hinge on which the history of Bengal — and of Bangladesh — turns.