The 1940s was a very busy time for the Long Beach airport. Throughout World War II, the airfield was used for the war effort. In August, 1941, the Civil Aeronautics Administration took over control of the airport, which had increased to . Once Los Alamitos became an operational base in 1941, NAAS Long Beach now turned to servicing carrier borne F4Fs, SBDs, FM-2s, F4Us, F6Fs, TBF/TBMs, and SB2Cs. In addition, it had utility aircraft and such patrol planes as the PBY, SNB, GB3, NH, GH, and SNJ.