WW I move of 77th Division of New York draftees, was not so secret in April 1918
Army Sgt. 1st Class Al H. Pfieffer, a member of the 77th Divison, sends a message on a field phone under the watchfull eye of a British instructor, during training with the British Army in Picardy, France on May 15, 1918 in this still from the silent film "Training with the British Army in Picardy, May 1918" on the National Archives website. The 77th Division, made up of draftees from New York City, was one of five American Army divisions to train with the British Army during World War 1. ( U.S. Army photo by U.S. Army Signal Corps via National Archives)