This postcard features Jordan Hall at Butler University. According to the 1943 Drift, "The arrival of the United States Navy Signal School on the campus last spring was the first step toward the revolutionizing of the campus and making the student body acutely war conscious. Over five hundred sailors were stationed in what was once the scene of Butler athletic events, the fieldhouse. Sleeping quarters were constructed in what used to be the gym, the track was covered with asphalt to serve as a place for drilling, and a new and modern kitchen and mess hall were installed. The out-dated heating plant was stripped and a new one was installed. The boys in blue soon became a familiar sight around the campus. They held classes in classrooms in Jordan Hall. Many of the campus sororities held socials and dinners in honor of the sailors. They were admitted free to Butler football games. The familiar football field was converted into a signal practice training field. The telephone poles became masts bearing pulleys and gaily colored signal flags. The field itself became a drilling ground for training the men. Commander H. C. Stigtenhorst commanded the ship. Classes were graduated from the school every three months. However, with the arrival of the army air crew mid-way in the second semester the navy was on its way out. The last class of signal men trained to serve their country at Butler was graduated early in June" (p. 9). On March 1, 1943, the 52nd College Training Detachment of Butler University was established. A division of the United States Army, which was also known as the Air Crew, it provided additional education to its students who were potential pilots. These students were also stationed at Butler Fieldhouse, as well as at campus fraternity houses.