I just got a great bit of history from local Don Ellis. These fliers are from the mountaineering school Fort Carson used to hold in Cheyenne Canon in the 1940s and 1950s. (click images for a larger version) They were using early alpine techniques with pitons and hemp ropes.
It would be interesting to trace the influence of this early government program on the nascent sport of Rock Climbing. Certainly Colorado Springs was one of the first regular technical rock climbing spots in the country, thanks to Robert Ormes. Boulder was another early hotspot.
The question is, how did the young G.I.s who learned ropework in Cheyenne Canon go on to influence the sport as they spread out over the country in civilian life? No idea. Anyone?