In 1942, a secret joint American-Canadian commando unit trained in the hills outside Helena, Montana, learning to ski, parachute, and kill silently with a custom-designed knife built for one purpose. By night, the same men crowded into Last Chance Gulch bars and danced at the USO. Before they shipped out, more than two hundred had married Helena girls. They went on to fight some of the most brutal engagements of the European war. After, some of them came back to Helena, to the wives they'd married in a rush, and tried to be ordinary men again.