At 3 a.m. on December 31, 1775, a band of desperate men stumbled through a raging Canadian blizzard toward Quebec. The doggedness of this ragtag militia--consisting largely of men whose short-term enlistments were to expire within the next 24 hours--was due to the exhortations of their leader. Arriving at Quebec before dawn, the troop stormed two unmanned barriers, only to be met by a British ambush at the third. Amid a withering hale of cannon grapeshot, the patriot leader, at the forefront of the assault, crumpled to the ground. General Richard Montgomery was dead at the age of...