Question Mark (aircraft) Question Mark (aircraft) Question Mark (""?"") was a modified Atlantic-Fokker C-2A transport airplane of the United States Army Air Corps. In 1929, commanded by Major Carl A. Spaatz, it was flown for a flight endurance record as part of an experiment with aerial refueling. "Question Mark" established new world records in aviation for sustained flight (heavier-than-air), refueled flight, sustained flight (lighter-than-air), and distance between January 1 and January 7, 1929, in a non-stop flight of more than 150 hours near Los Angeles, California. Following the record-setting demonstration, the C-2A was returned to transport duties. In 1931 more powerful engines replaced
History of the US Army National Guard Act's mobilization provisions, making it possible to deploy National Guard units and individual members directly for overseas service in the event of a war, without having to draft them first. The 1933 law also changed the name of the Militia Bureau to the National Guard Bureau. In August 1940, the National Guard was ordered to federal service for 12 months in anticipation of American entry into World War II. More than 400,000 National Guardsmen were called up as parts of divisions or in non-divisional units, immediately doubling the size of the active-duty U.S. Army. 18 Army divisions, 80 separate regiments,