1) In December 1777, Washington's Continental Army established winter quarters at Valley Forge, located around 25 miles from British-occupied Philadelphia.
2) Conditions at Valley Forge were extremely difficult, with many soldiers lacking proper clothing, shelter, and supplies during the harsh winter. Over 2,500 soldiers died from disease or exposure to the cold.
3) Despite the hardships, the army persevered through training under Baron von Steuben, and emerged from Valley Forge in better condition to continue fighting the British in the following year.