U.S. Marine Corps Lance Cpl. Kevan T. Steinman, a cannoneer with Battery B, 1st Battalion, 11th Marine Regiment, bandages a simulated wound during a Combat Life Saver Course aboard USS New Orleans, Oct. 28, 2015. Composite Training Unit Exercise allows Marines and sailors to further sharpen their skills and become a cohesive unit. COMPTUEX provides the Boxer Amphibious Ready Group/13th Marine Expeditionary Unit the opportunity to integrate planning while allowing focused, mission-specific training and evaluation for the Marines and their naval counterparts. - U.S. Marine Corps Lance Cpl. Kevan T. Steinman, a cannoneer with Battery B, 1st Battalion, 11th Marine Regiment, bandages a simulated wound during a Combat Life Saver Course aboard USS New Orleans, Oct. 28, 2015. Composite Training Unit Exercise allows Marines and sailors to further sharpen their skills and become a cohesive unit. COMPTUEX provides the Boxer Amphibious Ready Group/13th Marine Expeditionary Unit the opportunity to integrate planning while allowing focused, mission-specific training and evaluation for the Marines and their naval counterparts.