“Machine Gun 21,000” by L. Ron Hubbard
Publication date: December 1935
Original publication: Dynamic Adventures
Genre: Military & War
Story description: A US Marine faces a court-marshal for “losing” machine gun 21,000, but his fortune changes when he finds the man who stole it and quells a mutiny at the same time.
Currently available as part of the Stories from the Golden Age series, in the title Trick Soldier.