Sur Empire
Humayun, the successor of Babur, the founder of the Mughal Empire, had lost his inheritance when he was chased out of India by Sher Shah Suri who established the Sur Empire in 1540. Delhi and Agra fell into Sher Shah's hands, but he died soon after in 1545 at Kalinjar. He was succeeded by his younger son, Islam Shah Suri, who was a capable ruler. However, upon his death in 1554, the Sur Empire was caught up in a succession battle and was plagued by rebellion and the secession of provinces. Humayun made use of this discord to recapture what was lost and on 23 July 1555, the Mughals defeated Sikandar Shah Suri and finally regained control over Delhi and Agra.