The establishment of Students' Army Training Corps units was authorized by the Selective Service Act of 1917. The Students' Army Training Corps utilized the facilities, equipment, and faculty of colleges and universities to select and train officer candidates and and provide technical and vocational training during World War I. The unit at Oregon Agricutural College (OAC) formed in early 1918 and included officer trainees as well as draftees to be trained as toolmakers, foundrymen, machinists, auto mechanics, and radio operators. Dissolution of the Corps began with the armistice on November 11, 1918.
From the guide to the Students' Army Training Corps Records, 1918-1919, (Oregon State University Libraries)