U.S. 10th Mountain Division at Camp Hale

Members of the U.S. 10th Mountain Division at their training ground in Camp Hale, Colorado, 1943 or 1944. The 10th Mountain Division is a light infantry division in the United States Army based at Fort Drum, New York. Originally constituted as a mountain warfare unit, the division was the only one of its size to receive intense specialized training for fighting in mountainous and arctic conditions. Originally activated as the 10th Light Division (Alpine) in 1943, the division was redesignated the 10th Mountain Division in 1944 and fought in the mountains of Italy in some of the roughest terrain in the country

Source :
http://amyatishkin.livejournal.com/287245.html
https://en.wikipedia.org/wiki/10th_Mountain_Division_%28United_States%29