What happened at the height of the American revolution?

In the summer of 1780 Tories also known as British sympathizers started to attack American revolutionaries outposts along a river in the Wyoming valley.  Captain Daniel Klader sent an American Platoon of 41 men to go see what was going on and they ended up getting ambushed by the British sympathizers.  15 men in the platoon were killed in 1780 and this is what is known today as the Sugarloaf Massacre.