"Our present-day Civil Air Patrol is the product of the tense international situation prior to World War II. Axis forces made up of Nazi Germany, Fascist Italy, and Imperial Japan were taking over much of the world, and it was obvious, at least to some people, that the Axis powers had designs on the territories of the United States. In every country the Axis forces conquered, civil aircraft flight was eliminated. Too, in those countries not yet feeling the bite of Axis power, civil aircraft flight was either drastically curtailed or eliminated as authorities realized the need to better control air traffic through restriction to military flights only."
U.S. Civil Air Patrol: http://level2.cap.gov