If you would provide his name that would be a good place to start.If you can provide any clue as to the unit he flew with--Group or Squardon--that would serve to particularize the history.Many 8th Air Force Groups flew missions to SCHWEINFURT.If you have reference to his aircraft's nickname that would also help.Do you have a photo of the plane itself?The markings on the plane would tell us which unit he flew with.
Just as a note:All pilots began their service careers as Cadets.The Army Air Corps (AAC) was the earlier form of the Army Air Forces (AAF) which of course is the forerunner of the USAF (United States Air Force)The terms AAC and AAF were used interchangably during 1941-43.AAC is intended to reference the larger collective organization of air-oriented service.AAF tends to refer to the flying component. (Ref: 1942 Officer's Guide")
"Brown-shoe" is a term that generally denotes the time period when the USAF was formed--1947--prior to which the Air Force was part of the Army and wore brown shoes as part of the uniform.After which they wore black shoes.There is also a term associated with the change in uniform color in the period 1947 to 1952 when the USAF adopted their ownuniforms.The expression used during the transition from Army-green to AF-blue was "All-blue by '52".
The term "brown-shoe" is now more commonly utilized by the US Navy which still has a regulation the wearing of brown shoes by members of the Aviation elements of the USN.'Black-shoe Navy' refers to the sea-going "deck" Navy.'Brown shoes' are the flyers.