|Unit||Headquarters Squadron, Far East Air Service Command|
|Rank||Colonel U.S. Army Air Forces|
|Entered Service From||Texas|
|Date of Death||May 13 1945|
Walls of the Missing
Col. Prossen is one of 18 servicemen and women killed in an aircraft crash in a remote part of Papua New Guiana on May 13, 1945. Initially buried in field graves near the crash site, their remains were not recovered by the War Department until more than a decade after the war. Once recovered and identified, all 18 were interred as a group burial in Jefferson Barracks National Cemetery, St. Louis. Missouri. Their names are permanently engraved on the Walls of the Missing at Manila American Cemetery.