The highlight of his conquests occurred on 19 May 1520 where he secured the fortress of Raichur from Ismail Adil Shah of Bijapur after a difficult siege during which 16,000 Vijayanagara soldiers were killed. The exploits of the military commander, Pemmasani Ramalinga Nayudu of the Pemmasani Nayaks, during the Battle of Raichur were distinguished and lauded by Krishnadevaraya. It is said that 700,000-foot soldiers, 32,600 cavalry, and 550 elephants were used in the Battle of Raichur. Finally, in his last battle, he razed to the ground the fortress of Gulburga, the early capital of the Bahmani sultanate. His empire extended over the whole of South India.