Valley Forge: The Revolutionary War in Four Minutes Learn about the trials and successes of George Washington and the Continental Army during their time camped at Valley Forge. In December, 1777, General George Washington moved the Continental Army to their winter quarters at Valley Forge. Though Revolutionary forces had secured a pivotal victory at Saratoga in September and October, Washington’s army suffered defeats at Brandywine, Paoli, and Germantown, Pennsylvania. The patriot capital, Philadelphia, fell into British hands. By the time the army marched into Valley Forge on December 19, they were suffering not only from cold, hunger, and fatigue, but from low morale in the wake of the disastrous Philadelphia Campaign. David Lawrence is a ranger at Valley Forge National Historic Park.