Siege of Calcutta

Siege of Calcutta
Conflict	Siege of Calcutta
Partof	Carnatic Wars
Date	20 June – 20 December 1756
Place	Calcutta
Result	Siraj ud-Daulah victory; temporary British East India Company loss of Calcutta
Combatant1	Bengal Subah (Nawabs of Bengal)
Combatant2	British East India Company
Commander1	Siraj ud-Daulah, Mir Jafar (later influential), Mirza Muhammad Raza, Ghulam Husain Khan
Commander2	John Zephaniah Holwell, Roger Drake, Robert Clive, William Watts
Strength1	estimated several thousand regulars and militia
Strength2	small garrison of company soldiers, sailors, and civilians

Siege of Calcutta The siege was the 1756 capture of Calcutta by forces of Siraj ud-Daulah, the newly installed Nawab of Bengal, leading to the temporary expulsion of the British East India Company from its fortified factory at Fort William (Calcutta). The event precipitated a crisis in Bengal Subah politics, provoked military responses from Fort William (England) and the Company in British India, and contributed to wider contestation between France and Great Britain across India during the Seven Years' War. The episode became notorious for the alleged death of prisoners in the incident known as the Black Hole, shaping subsequent Anglo-Indian policy and historiography.

Background and Causes

Tensions stemmed from clashes among British East India Company, French East India Company, and regional powers after the War of the Austrian Succession and during the evolving Carnatic Wars. The rise of Siraj ud-Daulah in Murshidabad alarmed Company officials in Calcutta over fortification, trade privileges, and alleged insults to women and diplomatic protocols involving residents such as Margaret Clevland and factors like William Watts. Disputes included illegal trading by Company servants associated with families like the Holwells and William Watts’s connections to the Mughal court and Dutch East India Company merchants. The Company's unauthorized construction of defenses at Fort William (Calcutta) and sheltering of fugitive servants angered the Nawab, intersecting with broader French and British rivalry and the politics of the Awadh and Bengal courts.

Forces and Commanders

Siraj ud-Daulah led Bengal forces drawing on household contingents and provincial troops commanded by generals such as Jagat Seth-aligned officers and advisers including Ghulam Husain Khan and Mirza Muhammad Raza. The Company garrison comprised East India Company soldiers, Royal Navy seamen under local captains, and civilian volunteers commanded by Roger Drake, the then-governor, and John Zephaniah Holwell, a factor who later wrote accounts. Nearby European interests included detachments from French India at Pondicherry and trading posts like Madras and Bombay observing developments. Reinforcements and strategic responses later involved figures such as Robert Clive and naval officers dispatched from Fort William (England) and Britain.

The Siege and Capture (1756)

In June 1756 Siraj ud-Daulah marched on Calcutta, advancing from Murshidabad and forcing the town's surrender after bombardment and breaches of Fort William (Calcutta)’s outer defenses. Negotiations with Company officials including Roger Drake and William Watts failed as the Nawab demanded demolition of unauthorized fortifications and redress of perceived insults. The Nawab's troops entered Calcutta, seized the factory complex, and captured European, Armenian, and Anglo-Indian residents. Key contemporaneous locations included Chitpur and the Hooghly River approaches used by Company shipping. The rapid collapse highlighted Company vulnerabilities and the fragile balance among European trading companies and Indian rulers.

Black Hole of Calcutta Incident

Following the capture, prisoners were confined in a small prison reportedly within or adjacent to Fort William; the most cited account was by John Zephaniah Holwell. The alleged confinement, the "Black Hole" incident, described mass deaths from overcrowding and suffocation overnight. Contemporary witnesses and later scholars such as William Dalrymple and S.N. Sen debated casualty numbers and conditions, with conflicting reports from Company papers, Nawab records, and eyewitness narratives including accounts by Holwell and counter-claims by Bengali chroniclers. The incident was used by Company agents in London to galvanize public opinion and justify military reprisals, while later historians analysed sources including East India Company records, Mughal administrative correspondence, and regional accounts for biases and exaggeration.

Aftermath and British Retaliation

The loss prompted rapid reaction from Company authorities and private individuals. Robert Clive, then at Kasimbazar and later of Plassey fame, organized a small force, recruited sepoys, allied with disgruntled nobles such as Mir Jafar and financiers like Jagat Seth, and recaptured Calcutta in January 1757 during the expedition that preceded the Battle of Plassey. The Company's countermeasures involved naval support from officers loyal to Fort William (England) and detention of Nawab officials. The overthrow of Siraj ud-Daulah at Plassey, with assistance from Company operatives and local elites, reshaped power in Bengal and established Company ascendancy under figures like Robert Clive and Warren Hastings.

Political and Economic Consequences

The events accelerated the Company's transition from trading corporation to territorial power, enabling control over Bengal Subah revenues, trade in commodities such as cotton, indigo, and jute, and influence over princely states including Awadh. The seizure and later administration of Calcutta strengthened links with metropolitan institutions like the Court of Directors (East India Company) and prompted political debates in the British Parliament including interventions by MPs sympathetic to reformers and opponents. Economic fallout affected European competitors including the French East India Company and prompted insurance and shipping adjustments in London and Amsterdam. The episode influenced colonial legal frameworks and led to Company officials acquiring fiscal instruments tied to Bengal's zamindari structures and revenue collection.

Legacy and Historiography

The siege and the Black Hole became emblematic in imperial narratives celebrated in monuments, paintings, and memoirs by Company servants and critics including John Zephaniah Holwell and later commentators such as James Mill. Revisionist and postcolonial historians like William Dalrymple, Ayesha Jalal, and Fernandes reassessed sources, highlighting propaganda, selective memory, and the role of local elites including Mir Jafar and Jagat Seth in shaping outcomes. The incident influenced British public memory, leading to commemorations in London and institutional histories in Calcutta and Kolkata. Modern scholarship employs archival research in Murshidabad, Kolkata, and European repositories to interrogate narratives, casualty figures, and the intersection of military action with commercial ambition, affecting interpretations of early British Raj formation and Anglo-Bengali relations.

Category:Battles involving the British East India Company Category:History of Kolkata Category:1756 in Asia