Titled “Section Drill, U.S.A.A.C., Allentown, Pa.,” this postcard (above) depicts the basic training experienced by U.S. Army Ambulance Corpsmen, such as Columbia medical student Paul Meyer Wood. As with most military preparation of recruits, basic training (including lining up and marching in formation) preceded specialized instruction. Fortunately for Wood, his status as a college graduate was rewarded with an Army rank of Lieutenant before his transfer to the Italian Front during World War I. (Copyright © the American Society of Anesthesiologists, Inc.)