For 19-year-old Pat Finn, a Minnesota Marine with Item Co, 3rd Battalion, 5th Marines, the night seemed colder and darker than any of the others he'd experienced since landing in Korea. His Battalion had just arrived at a desolate, frozen lake he would remember for the rest of his life: the Chosin Reservoir. As the sun went down on November 27, 1950, and temperatures sank to 20 degrees below zero, Marines at Yudam-ni, a small village on the west side of the Chosin Reservoir, hunkered down for...