Marvin was assigned to the 100th Service Group. “In England our unit was split in half. My half went to set up three air fields being built. We put up Nissen huts, mechanic facilities and bomb and ammo storage dumps.” His last field was Rattlesden, England where he was permanently assigned as support.

Marvin’s duties included supervision of bomb and ammunition delivery to the base and maintenance of a perpetual inventory of their supply. Ammunition delivered loose in ammo boxes were loaded into ammunition belt links.

He was involved in the recovery of sixteen bombs buried in the ground at Rattlesden from a bomber that dropped them when it exploded in the air. Some of the bombs contained delayed action fuses. Each bomb when located was disarmed.

A B-17 that returned from a mission to Berlin had a large “flak” hole in the left side of the fuselage. The radio operator’s compartment had been totally destroyed and the radio operator blown out of the aircraft. One bomb bay door had been blown away. The aircraft landed with one flat tire and the ball turret guns pointing downward dragging on the runway. One bomb had not released over the target and was jammed in the wreckage of the bomb bay area. While fuel leaked from the aircraft and sparks emitted from the electrical system, Marvin disarmed the bomb and removed it from the aircraft. For his actions he was awarded the Soldier’s Medal.