Battle of Plassey and Buxar

The Battles of Plassey (1757) and Buxar (1764) were decisive events that established the British East India Company as a major political and military power in India.

Battle of Plassey (23 June 1757)

Background: The young Nawab of Bengal, Siraj-ud-Daula, clashed with the Company over fortification rights and economic privileges. After Siraj captured Calcutta (Black Hole incident), a British force under Robert Clive and Admiral Watson recaptured it. The Plot: Clive conspired with Mir Jafar, the Nawab’s disaffected commander, promising him the throne. At Plassey, a mango grove near Murshidabad, Siraj’s army of 50,000 faced Clive’s 3,000 troops. Mir Jafar’s contingent stood idle, and Siraj was defeated. Result: Siraj was captured and killed. Mir Jafar became a puppet Nawab. The Company gained control of Bengal’s revenue, marking the beginning of its territorial empire.

Battle of Buxar (22 October 1764)

Background: Mir Qasim, who succeeded Mir Jafar, tried to assert independence and allied with the Nawab of Awadh (Shuja-ud-Daula) and the Mughal Emperor Shah Alam II. The Battle: At Buxar, the combined Indian army (40,000–60,000) faced the British army under Major Hector Munro. Despite numerical superiority, the Indian forces were decisively defeated due to superior British artillery, discipline, and lack of coordination among allies. Result:

• Shah Alam II joined the British camp.
• Treaty of Allahabad (1765): The Emperor granted the Company the Diwani (right to collect revenue) of Bengal, Bihar, and Orissa in return for ₹26 lakh annual tribute.
• Awadh became a buffer state; Nawab Shuja-ud-Daula paid a heavy indemnity.

These victories transformed the Company into the de facto ruler of eastern India.