Nana Sahib then sent another force under the command of his brother, Bala Rao. On 15 July, the British forces under General Havelock defeated Bala Rao's army in the Battle of Aong, just outside the Aong village. On 16 July, Havelock's forces started advancing to Cawnpore. During the Battle of Aong, Havelock was able to capture some of the rebel soldiers, who informed him that there was an army of 5,000 rebel soldiers with 8 artillery pieces further up the road. Havelock decided to launch a flank attack on this army, but the rebel soldiers spotted the flanking manoeuvre and opened fire. The battle resulted in heavy casualties on both sides, but cleared the road to Cawnpore for the British.