Sher Shah Suri had died in 1545; his son and successor Islam Shah died in 1554. These two deaths left the dynasty reeling and disintegrating. Three rivals for the throne all marched on Delhi, while in many cities leaders tried to stake a claim for independence. This was a perfect opportunity for the Mughals to march back to India. The Mughal Emperor Humayun gathered a vast army, which included the Baloch tribes of Leghari, Magsi and Rind, and attempted the challenging task of retaking the throne in Delhi. Humayun placed the army under the leadership of Bairam Khan, a wise move given Humayun's own record of military ineptitude, and it turned out to be prescient as Bairam proved himself a great tactician. At the Battle of Sirhind on 22 June 1555, the armies of Sikandar Shah Suri were decisively defeated and the Mughal Empire was re-established in India.