US Army bicycle division, the 5th Infantry Bicycle Corps of Fort Missoula, Montana.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...n_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...e_division.jpg
Previously:
https://www.homemadetools.net/forum/...624#post132731
https://www.homemadetools.net/forum/...811#post148316
https://www.homemadetools.net/forum/...306#post138800
https://www.homemadetools.net/forum/...168#post126187