Is it true that in a surprise attack on Christmas night in 1776 Washington defeated the britishin philadelphia?

No, that statement is not accurate. On Christmas night in 1776, George Washington led a surprise attack against Hessian forces in Trenton, New Jersey, not Philadelphia. This bold maneuver resulted in a significant victory for the Continental Army, boosting morale during the American Revolutionary War. The British forces were not defeated in Philadelphia at that time; the city was occupied by the British in 1777.