John Armstrong was destined to be a humble farmer on the Pennsylvania frontier until the American Revolution changed his life. Rising from private soldier to an officer in the Continental Army, he later served in the First American Regiment, foreruner of the U.S. Army, that was tasked to facilitate the settlement of the Northwest Territory. He endured the fledgling army’s growing pains, was selected for a covert operation in Spanish territory to explore the Missouri River, and fought Nativ...