2 by 3.6 inches
WW1 U.S. Postal Express Service Coat. UJ-310
The American Expeditionary Force serving in France during World War One generated an enormous amount of mail, both outgoing and incoming. The monumental task of receiving, sorting, distributing, and shipping mail became the duties of the United States Military Postal Express Service. On May 9 1918, under General Order No. 72 the Military Postal Express Service (M.P.E.S.) was established under the direction of the Adjutant General A.E.F.. General Orders No. 155 General Headquarters, A.E.F., 13 September 1918 amended the name of the Military Postal Express Service to Postal Express Service. There were approximately 1600 soldiers assigned the Postal Express Service.
