The Battle of Plassey was fought between the forces of the English East India Company and the Nawab of Bengal Siraj-ud-Daulah, led by Robert Clive. It was fought on 23 June 1757 at Plassey close to Murshidabad.
A significant portion of the 50,000 robust military of the Nawab was managed by Mir Jafar who was hand in gloves with the British.
His warrior didn’t be part of the battle at an important time. Because of this, the Nawab’s forces suffered heavy casualties and he himself left the battlefield after the demise of his commander Mir Madan.
This was a serious blow to the Nawab’s military which was, in consequence, simply defeated by the British. Later, the Nawab himself was caught and killed, and Mir Jafar was instituted as the brand new Nawab of Bengal.