After the September 26, 1777 occupation of Philadelphia by Charles Cornwallis, on October 2nd, General George Washington created a plan of attack on Howe's 9,000-troop garrison stationed in Germantown, five miles above Philadelphia. Washington's plan was to simultaneously attack the British by four different units of troops coming from different directions during night with the goal of creating a double envelopment. Because of poor timing and a mix of bad luck and hardly any resources , Washington's plan failed, and he was forced to retreat to Whitemarsh with the British in pursuit. The Americans suffered 152 losses, 521 wounded, with over 400 men captured while British casualties numbered only 537.