This collection contains photographs that were taken by Clarence James (C.J.) Hansen during his service as a Lieutenant in the United States Army during WWI. Contents include an album with photographs taken in 1918 of Utah Agricultural College (now Utah State University), WWI training at Camp Stanley, Texas and the Saumur Artillery School, France, and the Gas School at Chaumont, France. The album consists of photographs of military life, weapons, and soldiers. This collection also contains a folder with three labeled photographs of the 3rd Battery in Leon Springs Training Camp taken February 2, 1918.