"Vigorous training, hazardous duty." These were the words that lured prospective volunteers to the First Special Service Force, and that promised, for those who measured up, the chance of getting into the war quickly. Unique during World War II, the First Special Service Force evolved as the amalgam of two Armies, Canadian and American, and the men who filled its ranks were among the hand-picked best from throughout North America. Their diverse and intensive training took them from the dust-covered prairies of Montana, to the bitterly-cold peaks of the Great Divide, to the waters of...