This is an original censored WWII Army Cover(envelope) dated September 29, 1944 and is franked with stamp #UC5 "Air Mail". The envelop was sent by Sgt. Mike Leonard to Mr. E. A. Harley of Detroit, Michigan. Nevertheless the envelope contains nothing.
The address the envelope was sent from was APO #83. Which according to "Geographic Locations of U.S. APO's 1941-1978" by James Shaffer, was in Orleans, France on this date.