Wing, July 1949 .* Note: The 472d Bombardment Group was a Second Air Force Operational Training Unit for initial B-29 crew training established in 1943; the 5th Bombardment Group was redesignated and reequipped as a B-29 unit by Far East Air Forces and assigned to Thirteenth Air Force in the Philippines in 1946 from aircraft and equipment of former XXI Bomber Command units which had inactivated. The 5th BG was a prewar bomb group assigned to Hawaii at the time of the Pearl Harbor Attack; its B-17s largely destroyed on the ground at Hickam Field. The unit was reformed into a B-24 Liberator heavy bomb group after the attack and was assigned to Thirteenth AF during the war; the 32d Composite Wing flew RB-29s for Far East Air Forces in the late 1940s, primarily as photo-mapping aircraft over China, Formosa, Indochina and Korea. Strategic Air Command (Groups) Army Air Forces B-29 bomb groups assigned to Strategic Air Command (SAC) after the command's establishment in March 1946. Includes groups that were returned to the United States from the European Theater and were programmed to redeploy to the Pacific Theater of Operations (PTO) after their B-29 conversion training was completed. These units were retained on active service after the Japanese Capitulation in August 1945 and were assigned to Continental Air Forces (CAF). In March 1946 were transferred to SAC upon redesignation of CAF to SAC. Many of these units and squadrons were under-manned and under-equipped due to the rapid demobilization of the armed forces in this period. In addition, frequent inactivations and activations were made, with older, prewar units being reactivated in place of younger, wartime units. Up until the end of the Korean War, SAC used tail markings that consisted of a combination of geometric shapes and letters. The shape would indicate the Numbered Air Force, with a triangle representing the Eighth Air Force; a circle for Fifteenth Air Force and a square for Second Air Force. This system was phased out in 1953. 2d Bombardment Group, (B-29, 1947–1948) Activated in July 1947 Chatam AFB, Georgia Tail Code: Empty Square 20th Bombardment Squadron 49th Bombardment Squadron 96th Bombardment Squadron Re-equipped with B-50 Superfortress, July 1948 7th Bombardment Group, (B-29, 1946–1948) Activated in October 1946 Carswell AFB, Texas Tail Code: Empty Triangle 9th Bombardment Squadron 436th Bombardment Squadron 492d Bombardment Squadron Re-equipped with B-36 Peacemaker, July 1948 22d Bombardment Group, (B-29, 1948–1952)