1918 establishments in the United States

American standards development organization

Armenian advocacy non-profit organization

formation of the United States Army (1918–19, 1921-27, 1941–46, 1950–92)

air warfare branch of the U.S. Army from 1918 to 1926

association of American Jews organized to defend Jewish interests at home and abroad

1918–1970 corps-sized military formation of the United States Army

U.S. Army corps formation during WWI and WWII

1918-2017 army-level command formation of the United States Army

labor union representing paid full-time firefighters and emergency medical services personnel in the United States and Canada

branch of the United States Army

American film production company in the silent film era

pair of National Forests in the United States

method of timekeeping

artillery regiment of the United States Marine Corps based at Marine Corps Base Camp Pendleton, California

decoration of the United States military

commemorative 50-cent piece

act of United States Congress

military unit

name of the aviation organization of the United States Army for a four-day period during World War I

employee organization

1917-2011 United States military air base in San Antonio, Texas, USA