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Called to active duty with Douglas O-38 and North American O-47 observation planes on 15 October 1940, the 107th was sent to the airfield at Camp Beauregard, Louisiana for unit training on 28 October 1940.
While at Langley, the 88th flew the DH-4s and the Douglas O-2.
The extensive O-series of aircraft, such as the Douglas O-38 and its descendants, were typically low and slow and used for direct Army liaison, artillery spotting, and observation.
The earliest recorded Air Corps use of the airport was when the 105th Observation Squadron began flying Douglas O-38 and North American O-47 light observation aircraft beginning on 24 September.
;O-2M: various export versions of O-2 that saw services with Republic of China Air Force.
such as the 111th Observation Squadron Brownwood Airfield Texas, 15th Observation Squadron Fort Sill Oklahoma, and 3rd Observation Squadron Langley Field Virginia.
The fuselage was constructed from welded steel tubing, with wooden wing spars from a J-3 Cub, the ailerons were made from 1929 Douglas O-38 rudders and the engine cheeks cowlings were made from Fairchild 24 wheelpants.
Initially, the mission of the new Air Force field was to fly antisubmarine patrols over the Gulf of Mexico, with the 69th Observation Group flying light aircraft (Douglas O-38, Douglas O-46, North American O-47) from November 1942 until March 1943.
The unit was activated again on 15 October 1940, being redesignated 107th Observation Squadron with Douglas O-38 and North American O-47 observation planes.
Over the course of those five years, the 125th flew the Douglas 0-38E, the Curtiss O-52 Owl, and the Stinson L-5 Sentinel.
Examples of aeroplanes with Townend rings were the Douglas O-38, Vickers Wellesley, the Westland Wallace and the Gloster Gauntlet.