768th Bombardment Squadron The 768th Bombardment Squadron is an inactive United States Air Force unit . It was last assigned to the 462d Strategic Aerospace Wing , based at Larson Air Force Base , Washington . It was inactivated on 25 June 1966 . History . B - 29 Superfortress operations against Japan . Established in March 1943 as one of the first B - 29 Superfortress squadron ; however no B - 29s were yet available for operational use . Trained with B - 24 Liberator s and B - 17 Flying Fortress es throughout 1943 . Received early model B - 29s and prototype YB - 29s beginning in August 1943 , however aircraft were still undergoing development and were frequently modified by Boeing technicians in the field while the squadron was undergoing training in Kansas . Deployed to India in early 1944 ; several aircraft breaking down en route via South Atlantic Transport route from Florida to Brazil then to Liberia ; across central Africa and Arabia , arriving in Karachi , India in March 1944 . Arrived at converted B - 24 airfield in eastern India in mid - April 1944 . Aircraft still undergoing modifications while transporting munitions and fuel to forward airfield in central China ; staging first attacks on Japanese Home Islands since the 1942 Doolittle Raid . Lack of logistical support limited number of attacks on Japan from Chinese staging airfields ; squadron also attacked strategic enemy targets in Thailand ; Indochina and Malay Peninsula . Moved to West Field ( Tinian ) , Tinian , in the Mariana Islands of the Central Pacific Area in January 1945 and assigned to XXI Bomber Command , Twentieth Air Force . It ' s mission was the strategic bombardment of the Japanese Home Islands and the destruction of its war - making capability . Flew " shakedown " missions against Japanese targets on Moen Island , Truk , and other points in the Carolines and Marianas . The squadron conducted combat missions over Japan participating in wide area firebombing attacks , but the first ten day blitz resulting in the Army Air Forces running out of incendiary bombs . Until then the squadron flew conventional strategic bombing missions using high explosive bombs . The squadron continued attacking urban areas with incendiary raids until the end of the war in August 1945 , attacking major Japanese cities , causing massive destruction of urbanized areas . Also conducted raids against strategic objectives , bombing aircraft factories , chemical plants , oil refineries , and other targets in Japan . The squadron flew its last combat missions on 14 August when hostilities ended . Afterwards , its B 29s carried relief supplies to Allied prisoner of war camps in Japan and Manchuria Squadron was largely de - mobilized on Saipan during the fall of 1945 . Was reoganized as part of continental Air Forces , Fourth Air Force at March Field , California in November 1945 , being manned and equipped with low - hour B - 29s returned from the Central Pacific . It later was transferred to the new Strategic Air Command on 21 March 1946 , being one of SAC ' s initial bombardment squadrons . Demobilization , however , was in full swing and the unit turned in its aircraft and was inactivated on 1 October 1946 . Strategic Air Command . Reactivated in 1963 by redesignation of SAC 327th Bombardment Squadron ; equipped with B - 52 Stratofortress es . Inactivated in 1966 with closure of Larson AFB due to budget reductions .