Soldiers from the Wisconsin and Utah Army National Guard and U.S. Army Reserve sing the Army song after donning the historic "Old Abe" patch ceremony at 101st Division Headquarters, at Fort Campbell, Ky., June 16, 2015. The 101st Airborne Division (Air Assault) became the first division headquarters to convert to a multi-component unit division headquarters. The purpose of multi-component unit division headquarters is to fully integrate Reserve and National Guard Soldiers into the modification table of organization and equipment.