U.S. Soldiers assigned to Combined Joint Task Force-Horn of Africa's operations directorate are presented with the U.S. Africa Command combat patch during a ceremony at Camp Lemonnier, Djibouti, Feb. 25, 2017. The combat patch distinguishes Soldiers who have deployed to a combat zone, and is worn on the right shoulder, opposite the higher headquarters unit patch. (U.S. Air National Guard photo by Master Sgt. Paul Gorman)

U.S. Army Capt. John Healy, Combined Joint Task Force-Horn of Africa (CJTF-HOA) operations officer, presents Sgt. Alexander Smith, CJTF-HOA operations noncomissioned officer with the U.S. Africa Command (USAFRICOM) combat patch during a ceremony at Camp Lemonnier, Djibouti, Feb. 25, 2017. Soldiers currently deploying to Camp Lemonnier are authorized to wear the USAFRICOM shoulder sleeve insignia upon returning home to symbolize former wartime service. (U.S. Air National Guard photo by Master Sgt. Paul Gorman)

U.S. Soldiers assigned to Combined Joint Task Force-Horn of Africa's operations directorate are presented the U.S. Africa Command combat patch while deployed to Camp Lemonnier, Djibouti, Feb. 25, 2017. The tradition of the combat patch dates back to World War I when members of the U.S. Army’s 81st Infantry Division were authorized to wear distinctive shoulder sleeve insignia during and following their service in France. (U.S. Air National Guard photo by Master Sgt. Paul Gorman)