June 1912. Beckwith Havens, a pilot employed by pioneer aircraft builder Glenn H. Curtiss, enlisted in the New York National Guard's 1st Company, Signal Corps as a private.
29 June 1916. Hiram Bingham, a history professor at Yale University who had rediscovered the largely forgotten Incan city of Machu Picchu in July 1911, joined the Connecticut National Guard as a private. A strong aviation advocate, Lt. Col. Bingham became a pilot and commanded the Army's aviation school at Issoudun, France during World War I after he transferred to the Officer Reserve Corps of the Signal Corps. While a U.S. Senator from Connecticut, he was appointed to the President's Aircraft Board by President Calvin Coolidge in 1925.
30 June 1916. The Second Aero Company, New York National Guard, was mustered in Buffalo under the command of Capt. John Sutterfield.
29 June 1921. The 104th Squadron (redesignated the 104th Observation Squadron on 25 January 1923), Maryland National Guard, received federal recognition. It emerged from a flying club active in Baltimore during 1919 and 1920. Initially, its 34 members had no uniforms or aircraft. They trained every Saturday afternoon at Logan Field in Dundalk, Maryland. Their training initially consisted of military drill and instruction about aviation topics.
30 June 1922. The Militia Bureau reported that 53 Army airplanes had been issued to 6 National Guard aviation units by this date.