United States. Three Army Air Force/United States Air Force Badges certificate_of_authenticity the chains of which are

the chains of which are broken

"The Passing of the Empire" and "The Provocator"

Instituted 19 May 1900

The Radio Operator & Air Gunner Badge - In silvered tombac

then editor in chief of the Army School’s Medical Department’s fifteen-volume official history entitled “The Medical Department of the United States Army in the World War

United States. Three Army Air Force/United States Air Force Badges certificate_of_authenticity the chains of which areUSAAF Senior Aircrew Badge (two piece construction, in silvered brass, unmarked, measuring 76 mm (w) x 28 mm (h), dual push pins); USAAF Bombardier Badge (in sterling silver, marked "STERLING" on the reverse, measuring 76. 3 mm (w) x 25. 3 mm (h), horizontal pinback); and USAF Master Navigator Combat Systems Officer Observer Badge (in silvered metal, maker marked "GEMSCO" and marked "A. G. O. G 2" on the reverse, measuring 78 mm (w) x 34. 8 mm (h),