Marching out of Williamsburg, Virginia the Americans and French arrived on September 28, 1781 at Yorktown. They surrounded the earthworks in a Semicircle with the York River completing the circle. Cornwallis made the first move, abandoning his outer works made up of four redoubts. Washington and Rochambeau thought this was a mistake. They sent troops to occupy the outer earthworks. The Americans and French began setting up their siege operations on September 30, first on the east side. By October 9, they were close enough to begin the bombardment. The Americans and French stormed two of the redoubts on October 14, forcing the British back even further. By that time it became obvious the British could not hold out much longer. On October 16, the British attacked two of the redoubts they had abandoned and spiked the guns. At the same time Cornwallis attempted to slip past the guards to Gloucester (now Gloucester Point, Virginia) across the river but was turned back by a storm. Finally, with no sign of relief as promised by Clinton, Cornwallis' army of 6,000 soldiers surrendered.