855th Bombardment Squadron The 855th Bombardment Squadron is an inactive United States Air Force unit . Its last assignment was with the 491st Bombardment Group , based at McChord Field , Washington . It was inactivated on 8 September 1945 . History . Established in 1920 as the 112th Observation Squadron , Ohio National Guard . After the Pearl Harbor Attack , unit was federalized and moved to Dover Field , Delaware in February 1942 found this unit flying Antisubmarine patrols with 0 - 47s . In the months that followed , the Squadron moved down the Atlantic seaboard and was based at Lantana Airport , Florida , when its designation was changed to the 522nd Bombardment Squadron ( H ) . New equipment in the form of B - 24 Liberators was supposed to be forthcoming to justify the ( H ) , but in the meantime the old 0 - 47s flew on . In January 1943 the Squadron moved to Boca Chica , Florida where it acquired some B - 18s and a few B - 34 ’ s . Another redesignation ( 17th Antisubmarine Sq . ) , a new station ( Batista Field , Cuba ) and a few new aircraft ( B - 25s ) followed until finally , on 12 August 1943 , the unit was ordered to Langley Field , Virginia , for training with B - 24s . Redesignated as B - 24 Heavy Bomber Squadron and reassigned on 1 October 1943 to Davis - Monthan Field , Arizona ; assigned to II Bomber Command for training . Reassigned to Biggs Field near El Paso , Texas on 11 November 1943 and trained there until January 1944 when , during training , most of ground unit was transferred to Pratt Army Airfield , Kansas , to augment a new B - 29 Superfortress group being trained by Second Air Force . Throughout November and December , personnel strength was further reduced by transfer to other B - 24 groups of personnel . Reassigned to Pueblo Army Air Base , Colorado in January 1944 to complete training . New B - 24s were assigned to the group from Consolidated and training was completed by April . Redesignated as B - 24 Heavy Bomber Squadron and deployed to Eighth Air Force in England . Assigned to RAF North Pickenham . The squadron concentrated its attacks on strategic objectives in Germany , striking communications centers , oil refineries , storage depots , industrial areas , shipyards , and other targets in such places as Berlin , Hamburg , Kassel , Cologne , Gelsenkirchen , Bielefeld , Hanover , and Magdeburg ; on one occasion attacked the headquarters of the German General Staff at Zossen , Germany . While on a mission to bomb an oil refinery at Misburg on 26 November 1944 , the squadron was attacked by large numbers of enemy fighters ; fought off the interceptors , successfully bombed the target . Although engaged primarily in strategic bombardment , the squadron also supported ground forces at Saint - Lô in July 1944 ; assaulted V - weapon sites and communications lines in France during the summer of 1944 ; dropped supplies to paratroops on 18 September 1944 during the airborne attack in Holland ; bombed German supply lines and fortifications during the Battle of the Bulge , December 1944 – January 1945 ; supported Allied forces in the airborne drop across the Rhine in March 1945 ; and interdicted enemy communications during the Allied drive across Germany in April 1945 . Squadron returned to United States and was programmed for B - 29 operations in Pacific . End of war with Japan in August 1945 led to squadron demobilization and inactivation in September 1945 .