Warrant officers at Camp Humphreys, South Korea, celebrated 100 years of the U.S. Army Warrant Officer Corps, July 10. The U.S. Army Warrant Officer Corps was established July 9, 1918 by an act of Congress. There are currently 762 Warrant Officers serving in the Korean Peninsula and more than 250 of them gathered at Camp Humphreys to recognize the 100th birthday of the Army Warrant Officer Corps.