4 December 1921. The 136th Squadron, Tennessee National Guard, received federal recognition as a Corps Aviation unit. It was redesignated the 136th Observation Squadron on 25 January 1923 and then the 105th Observation Squadron when assigned to the 30th Division on 16 January 1924.
5 December 1943. Equipped with Bell P-39Q's, the 110th Reconnaissance Squadron (Fighter), originally the 110th Observation Squadron, Missouri National Guard, arrived in Australia. It then moved to New Guinea to support General Douglas MacArthur's offensive against Japanese forces.