The French built Fort Carillon (Fort Ticonderoga’s original name) facing south because the English were attacking from the south. In the 1758 Battle of Carillon, France’s 4,000 troops held off 16,000 British troops.
In the American Revolutionary War, the people in New England and New York expected Fort Ticonderoga to perform the same miracle. After all, 1777 was less than twenty years later. But this time the English attacked from the north.
What difference could a fort facing away from an attacking foe make?