The battle of Buxar was fought 0n 22nd Oct 1764 between the forces of the command of the British East India Company and the combined armies of MirQasim, the Nawab of Bengal, the Nawab of Oudh, and the Mughal Emperor, Shah Alam II. The battle fought at Buxar, ( in Bihar), located at the bank of the Ganges.
The British troops engaged in the fighting, numbered 7,072 comprising 857 British, and 5,297 Indian Sepoys and 918 Indian Cavalry . The annual stipend of Rs. 450,000 ,or of the native forces were estimated to be around 40,000 lack of co-ordination among the three desperate allies each with a different axe to grind, was responsible for their decisive debacle.Shuja-ud-Daulah, the prime victim, signed the treaty of Allahabad that secured Diwani rights for the company to collect and manage the revenues of almost 100,000,000 acres of real estate which currently form parts of the Indian states of West Bengal, Orissa, Bihar, and Jharkhand, Uttarpradesh as well as Bangla Desh.
Shah Alam II became a pensioner with a monthly pension and Mir qasim was replaced.
This was the Battle when the British attained the political power of India.