After graduating high school Berry enlisted in the Marine Corps and upon graduating recruit training in South Carolina was stationed in Quantico Virginia and then North Carolina before being sent with 1st Parachute Battalion to fight in the Solomon Islands. After leaving North Carolina he went on to fight at Bougainville and then went to Guadalcanal for a short time before being sent to San Diego, California. While stationed at Camp Elliott in San Diego he was attached to the 5th Marine Division before being sent to the Hawaiian Islands and receiving the rank of corporal.