Behind the scenes at third U.S. army field headquarters.

Behind the scenes at third U.S. army field headquarters. A trailer housed the outdoor mechanism of the communications system of the Third U.S. Army. It also contained a telephone switchboard from which connections were made to all parts of the world. This outside and of the wire room expedited the work of connecting the trailer unit with the camp's lines and left the operators freedom of movement while the hookup was being made. The solders are, left tot right, Sergeant F.A. Flenn of Chircago, Illinois; Corporal Paul Long of Lancaster, Pennsylvania, and Corporal Arthur Kroft of Chicago.