The 185th Aero Squadron was a Air Service, United States Army unit that fought on the Western Front during World War I. Known as the "Bats", the 185th Aero Squadron is notable as it was the first and only night pursuit (fighter) squadron organized by the United States during World War I. Its mission was night interception of enemy aircraft, primarily bombers and observation aircraft. It was engaged in combat for less than a month before the 1918 Armistice with Germany. After the armistice, the squadron returned to the United States in June 1919 and was demobilized.