Six combat units will deploy to Iraq between January and March of next year, the Pentagon announced June 30. They are: Marine Regimental Combat Teams 6 and 8, Camp Lejeune, N.C.; the Army 1st and 2nd Brigade Combat Teams, 1st Cavalry Division, Fort Hood, Texas; the 3rd Brigade Combat Team, 10th Mountain Division, Fort Drum, N.Y.; and the 56th Stryker Brigade Combat Team, 28th Infantry Division, Pennsylvania Army National Guard. The deployments will last 12 months.