This is a list of Boeing B-29 Superfortress units consisting of nations, their air forces, and the unit assignments that used the B-29 during World War II, Korean War, and post war periods, including variants and other historical information Delivery of the first YB-29 test aircraft (YB-29-BW 41-36954) to the USAAF was made in June 1943, being delivered to the 58th Bombardment Wing, 40th Bombardment Group. The first production B-29s began to roll off the production lines at Boeing-Wichita in September 1943, also going to the 58th BW. The last B-29 was delivered by Boeing-Wichita (B-29-100-BW, 45-21872) in September 1945. 21872 was converted to a WB-29; being destroyed in a crash on 25 September 1953 near Eielson AFB, Alaska, when assigned to the 58th Strategic Reconnaissance Squadron (Medium), Weather. United States United States Army Air Forces Combat Groups Army Air Forces B-29 groups and squadrons assigned to operations as part of the Pacific War against the Japanese Empire, 1944–1945. Includes units assigned to the XX Bomber Command in the China-Burma-India Theater (April 1944 – February 1945), and to XXI Bomber Command in the Pacific Theater of Operations (PTO) (March–August 1945). Also includes groups and squadrons deployed to Okinawa assigned to Eighth Air Force, in July/August 1945 but did not engage in combat operations. 6th Bombardment Group, (B-29, B-29A, 1944–1947) Reassigned from Sixth Air Force (ATO) Redesignated Very Heavy BG, March 1944 XXI BC; 313th Bombardment Wing Circle R Tail Code; North Field, Tinian 24th Bombardment Squadron 39th Bombardment Squadron 40th Bombardment Squadron Inactivated in October 1948 9th Bombardment Group, (B-29, B-29A, 1944–1947) Reassigned from Sixth Air Force (ATO) Redesignated Very Heavy BG, March 1944 XXI BC; 313th Bombardment Wing Circle X Tail Code; North Field, Tinian 1st Bombardment Squadron 5th Bombardment Squadron 99th Bombardment Squadron Inactivated in October 1948 16th Bombardment Group, (B-29B, 1944–1946) Activated, April 1944 XXI BC; 315th Bombardment Wing Diamond B Tail Code; Northwest Field, Guam 15th Bombardment Squadron 16th Bombardment Squadron 17th Bombardment Squadron Inactivated in April 1946 19th Bombardment Group, (B-29, B-29A, 1944–1954) Reassigned from Fifth Air Force (SWPA) Redesignated Very Heavy BG, April 1944 XXI BC; 314th Bombardment Wing Square M Tail Code; North Field, Guam 28th Bombardment Squadron 30th Bombardment Squadron 93d Bombardment Squadron Reassigned to: Twentieth Air Force (FEAF), May 1946 Reassigned to: 19th Bombardment Wing (FEAF), August 1948 Moved to: Andersen AFB, Guam, August 1948 Moved to: Kadena AB, Okinawa, June