The 68th and 77th Reconnaissance Groups trained at Brownwood during 1942 with a variety of aircraft, including B-17 Flying Fortress, B-24 Liberators, P-40 Warhawks and A-20 Havocs. In addition to the training performed at the airfield, patrols were flown over the Gulf of Mexico and along the Mexican border. The role of the Brownwood Army Airfield from November, 1943, to September, 1944 was to operate as a refresher school and replacement training unit for liaison pilots within the Third Air Force. One of the primary aircraft used in this role was the Stinson L-5. In October, 1944, the airfield became the new combat crew training center. From January, 1945, until the end of World War II, the primary mission of the Brownwood Army Airfield was the training and preparation of combat crews for overseas replacement.