Avery

At the beginning of the first Call of Duty, you have to go through boot camp at Camp Toccoa. As Foley gives you instructions, you can see that there is a soldier on the MG-42 pointing at a cement wall. His name is Sergeant Avery of the 506th Parachute Infantry Regiment, 101st Airborne Division. His job is to fire on the cement wall parallel to a barbed wire excersise where you have to crawl under the machine gun fire. He participated trainings for D-Day but was severely injured during jumps from plane and sent back to USA.