The Department of Defense has identified 4,321 American service members who have died since the start of the Iraq war and 756 who have died as part of the Afghan war and related operations. It confirmed the deaths of the following Americans on Monday:

Afghanistan:

FITZGIBBON, Patrick S., 19, Pvt., Army; Knoxville, Tenn.; Fourth Infantry Division.

JONES, Richard K., 21, Pfc., Army; Roxboro, N.C.; Fourth Infantry Division.

MILLER, Alexander J., 21, Specialist, Army; Clermont, Fla.; 10th Mountain Division (Light Infantry).

WALLS, Jonathan M., 27, Cpl., Army; West Lawn, Pa., Fourth Infantry Division.

Iraq:

POLK, Johnny R., 39, Staff Sgt., Army; Gulfport, Miss.; First Cavalry Division.