Battle of Buxar and British Expansion

The Battle of Buxar was fought on October 22, 1764, near the town of Buxar on the banks of the Ganges River. It pitted the forces of the British East India Company against the combined triple alliance of Mir Qasim (Nawab of Bengal), Shuja-ud-Daulah (Nawab of Awadh), and Shah Alam II (Mughal Emperor). While Plassey in 1757 was won primarily through secret intrigue, Buxar was a decisive military engagement. The British victory established Company supremacy over northern India and opened the Gangetic plain to British territorial expansion.

Background and Escalation to War

The conflict originated from the administrative and commercial measures taken by Mir Qasim after he became the Nawab of Bengal in 1760.

Commercial Disputes and Dastak Misuse

• Company servants routinely abused dastaks (duty-free trade permits) for their private trade, depriving the Bengal treasury of tax revenues.
• To create a level playing field for local merchants, Mir Qasim abolished all transit duties across Bengal in March 1763.
• The Calcutta Council opposed this tax exemption, demanding that internal duties be restored on Indian traders.
• Military clashes broke out in mid-1763 after William Ellis, the British chief at Patna, attempted to capture Patna city by force.

Formation of the Triple Alliance

• British armies under Major Thomas Adams defeated Mir Qasim’s modernized forces in successive battles at Katwa, Giria, Sooty, and Udhwa Nullah in 1763.
• Mir Qasim fled to Awadh and formed a coalition with Nawab Shuja-ud-Daulah and Mughal Emperor Shah Alam II.
• The alliance aimed to expel the East India Company from Bengal and restore imperial authority across eastern India.

The Military Engagement at Buxar

The two opposing forces met at Buxar in modern-day Bihar on October 22, 1764.

Military Strengths and Command

• Major Hector Munro commanded the British force of approximately 7,072 troops, including 857 European soldiers and 5,297 Indian sepoys.
• The triple alliance fielded an army estimated between 40,000 and 50,000 men, composed of cavalry, infantry, and heavy artillery.
• Internal division, lack of central coordination, and varied tactical approaches weakened the allied command structure.

Course and Outcome of the Battle

• Major Munro arranged his troops in two disciplined lines with artillery positioned in the gaps to counter cavalry charges.
• The allied forces launched disjoined attacks that failed to break the tight British ranks.
• British artillery fire inflicted heavy casualties on the allied cavalry, forcing a total rout within five hours.
• The victory was absolute; the British captured 133 enemy cannons and the entire baggage train of the alliance.

The Treaty of Allahabad (1765)

Robert Clive returned to India as Governor of Bengal in May 1765 to formalize political control through treaties signed at Allahabad in August 1765.

Agreement with Mughal Emperor Shah Alam II

• The Emperor issued an imperial farman granting the East India Company the permanent Diwani (right to collect land revenue) of Bengal, Bihar, and Orissa.
• In return, the Company agreed to pay the Emperor an annual tribute of 26 lakh rupees from Bengal revenues.
• Shah Alam II received the districts of Kora and Allahabad, which were carved out from the territories of Awadh.
• The Emperor was housed at Allahabad Fort under direct British protection.

Agreement with Nawab Shuja-ud-Daulah of Awadh

• Shuja-ud-Daulah paid a war indemnity of 50 lakh rupees to the East India Company.
• He ceded Kora and Allahabad to Emperor Shah Alam II.
• The Company promised to assist Awadh against external threats, transforming Awadh into a dependent buffer state protecting Bengal from Maratha incursions.

The Dual System of Government in Bengal (1765–1772)

The acquisition of Diwani rights led to the introduction of the Dual System (Doyarchhi) in Bengal, structured by Robert Clive.

Split Administrative Authority

• Diwani (Revenue Administration): Directly controlled by the Company, giving it total financial authority.
• Nizamat (Executive & Judicial Functions): Retained by the puppet Nawab of Bengal, leaving him responsible for law and order without financial resources.
• To manage revenue collection without maintaining a European civil service, Clive appointed Muhammad Reza Khan as Naib Diwan for Bengal and Raja Shitab Rai for Bihar.

Impact and Abolition

• The separation of power from responsibility caused economic ruin, administrative corruption, and severe agricultural distress.
• The system worsened the impact of the Great Bengal Famine of 1770, which killed an estimated one-third of the regional population.
• Governor-General Warren Hastings abolished the Dual System in 1772, bringing Bengal under direct British administration.

Structural Comparison: Plassey versus Buxar

Key Historical Facts

Major Hector Munro used a disciplined two-line tactical formation at Buxar, preventing his artillery from being encircled by the swift Durrani and Mughal cavalry regiments. The victory at Buxar made the East India Company the primary military power in northern India, bringing the Mughal Emperor under direct imperial influence. Following his defeat at Buxar, Mir Qasim escaped from the battlefield with his personal jewels. He wandered across northern India trying to raise fresh mercenaries, eventually dying in poverty near Delhi in June 1777. His primary military commander at Munger, the Armenian general Gurgin Khan, was assassinated prior to the battle due to suspicion of secret communication with the British. The Treaty of Allahabad marked the formal conversion of the East India Company from a commercial trading body into a territorial ruler. By acquiring the Diwani of Bengal, Bihar, and Orissa, the Company secured an annual revenue surplus exceeding two million pounds. This revenue was used to fund British military campaigns across southern India, finance British tea purchases in China, and purchase Indian export goods without importing silver bullion from Europe.