Corporals with the 15th Marine Expeditionary Unit stand at the position of attention for the national anthem during the Corporals' Course 338-13 graduation on the mess decks of USS Peleliu, April 5. Corporals' Course is a professional military education for enlisted Marines designed to give corporals the tools to become more effective small unit leaders. The 15th MEU is comprised of approximately 2,400 Marines and sailors and is deployed as part of the Peleliu Amphibious Ready Group. Together, they provide a forward-deployed, flexible sea-based Marine Air Ground Task Force capable of conducting a wide variety of operations ranging from humanitarian aid to combat. (U.S. Marine Corps photo by Cpl. John Robbart III/Released)