 On July 31, 1781, Washington relented and assigned Hamilton as commander of a New York light infantry battalion. In the planning for the assault on Yorktown, Hamilton was given command of three battalions, which were to fight in conjunction with the allied French troops in taking Redoubts No. 9 and No. 10 of the British fortifications at Yorktown. Hamilton and his battalions fought bravely and took Redoubt No. 10 with bayonets in a nighttime action, as planned. The French also fought bravely, suffered heavy casualties, and took Redoubt No. 9. These actions forced the British surrender of an entire army at Yorktown, Virginia, effectively ending their major British military operations in North America.
