The Americans began formal siege operations on the eastern side of Yorktown on 30th September and on 9th October were sufficiently close to began an artillery bombardment. On 14th October the Americans and French stormed two redoubts in front of their trenches and the position of the British in Yorktown became untenable. The British carried out a sortie on the 16th in which several guns in the two redoubts were spiked. On the same day Cornwallis attempted to pass the Guards, the 23rd and the Light Infantry across the York River to Gloucester but was thwarted by a storm.
6,000 British surrendered to the Americans and French with 10 stands of German and British colours, 240 pieces of artillery, small arms, ammunition and equipment.The casualties during the siege had been 500 British, 80 Americans and 200 French.The capitulation of the British to the Americans and French ended the fighting in the war and led to the Peace Treaty that acknowledged the independence of the American states. Clinton’s relieving force arrived in the Chesapeake on 24th October.