Dyersburg Army Air Base is an inactive United States Air Force base, approximately 2 miles north of Halls, Tennessee. It was active during World War II as a training airfield. It was closed on 30 November 1945 Dyersburg AAB was the largest combat aircrew training school built during the early war years. It was the only inland B-17 Flying Fortress training base east of the Mississippi River. The base was located on 2,541 acres (10.28 km2), not including the practice range. Approximately 7,700 crew men received their last phase training at DAAB. 114 crew men lost their lives.