Wallace Beery takes on saboteurs, the Army and Marjorie Main in this patriotic war drama, costarring Lewis Stone and Oscar-winner* Donna Reed in one of her earliest roles. When the 19th Cavalry Regiment trades in its horses for tanks, no one is more upset than First Sgt. Hap Doan (Beery), who loves his mount more than he does his gal Susie (Main). Promising to retire and take the horse with him, Hap goes AWOL after a runaway tank fatally injures his steed. Dishonorably discharged, a disgruntled Hap soon finds himself mixed up with spies in a sinister plot to blow up his units new tanks. Released one month after Pearl Harbor, The Bugle Sounds was filmed with the full cooperation of the U.S. Army and was shot on location at Fort Ord, California, and on huge replicas of Fort Lewis and Fort Knox, built on M-G-M’s backlot.