Great film, check it out:

An elite group of champion skiers, mountain climbers and European mountaineers become the U.S. Army’s 10th Mountain Division, America’s only mountain and winter warfare fighting unit. From the intensive training atop the Colorado Rockies to the spectacular night climb of Italy’s Riva Ridge — where the 10th scored their biggest victory against Hitler’s troops — the exploits of this famous division are scrupulously chronicled.