This World War I ambulance unit, recruited in Amherst, Massachusetts in June 1917 from Amherst College students and local residents, comprised twenty-five Amherst College alumni and undergraduates, as well as thirty other soldiers, five officers, and eventually a number of French personnel. After training in Allentown PA, and departure on August 7, 1917, they arrived in France. Their original designation, unit 39, was amended to S.S.U. (Section Sanitare Unis) 539 on January 1, 1918. The unit adopted the image of the black cat for its insignia. Over nineteen months of service attached to both the French and U.S. Armies, it received two army citations and 22 individual citations, including the Croix de Guerre with Palm. It was involved in three major military operations: the Aisne-Marne, the Oise-Aisne, and the Ypres-Lys offensives. They also collaborated with the French army in four minor operations in the Tahure, Souvain, St.Hilaire, and Jumel sectors. The unit returned to America on April 2, 1919, and the majority of the Amherst soldiers were discharged on April 14, 1919 at Camp Devens, Massachusetts.
From the guide to the U. S. Army Ambulance Service, Section 539 Records, 1917-1941, (Amherst College Archives and Special Collections)
