During the Anglo-Sikh War, Swarup Singh fought on the side of the British, for which he was much honoured by them. During the First War of Independence, he sent his troops into battle against the rebels, personally fighting through many of the major battles clad in armor and chain mail. He rushed his forces to defend the British cantonment at Karnal, then served at Alipur and at the Battle of Badli-ki-Serai. He fought alongside the British forces during the siege of Delhi for which he was mentioned in despatches in 1858 and received the Indian Mutiny Medal. Also in 1858, he received several titles of honour from the British government. In 1860, he was granted a further title, a gun salute of 11-guns, 14 villages and the Delhi properties of a Mughal prince, Shahzada Mirza Abu Baqar. The following year, Swarup Singh received a further 11 villages as a reward.