Training in the United States

The 743d Bombardment Squadron was first activated at Alamogordo Army Air Field, New Mexico on 1 June 1943, one of the four squadrons of the 455th Bombardment Group.^[2][3] The initial cadre for the squadron was drawn from the 302d Bombardment Group. In July, a group cadre was given advanced tactical training by the Army Air Forces School of Applied Tactics at Orlando Army Air Base and Pinecastle Army Air Field, Florida. After organizing at Alamogordo, the squadron moved to Utah, where the ground echelon was stationed at Kearns Army Air Base, although flying operations were based at Salt Lake City Army Air Base.^[4] After completing training at Langley Field, Virginia, the squadron departed the United States for the Mediterranean Theater of Operations in December 1943.^[2] The air echelon began staging through Mitchel Field, New York to ferry their Liberators via the southern ferry route.^[5] The ground echelon sailed on the SS Charles Brantley Aycock.^[6]

Combat operations

The air echelon of the squadron was delayed in Tunisia and was not entirely lodged at the squadron's combat station of San Giovanni Airfield, Italy until 1 February 1944, and the squadron flew its first mission later that month. The squadron was engaged primarily in the strategic bombing campaign against Germany, attacking targets like airfields, factories, oil refineries, harbors, marshalling yards in Italy, France, Germany, Austria, Hungary, Romania, and Yugoslavia.^[3]

On 2 April 1944, the squadron attacked a ball bearing plant at Steyr, Austria for which it earned a Distinguished Unit Citation (DUC). The primary target, the Daimler-Pusch aircraft engine factory was obscured by clouds, so the unit attacked the nearby ball bearing plant although attacks by an estimated 75 twin engine fighters continued through the bomb run and heavy, accurate flak was encountered. The squadron claimed the destruction of nine of these fighters against the loss of two squadron Liberators.^[7]

On 26 June 1944, the squadron encountered fighter opposition that was described as the strongest Fifteenth Air Force had encountered to date, and which destroyed several Liberators of the 455th Group, which was leading the 304th Bombardment Wing on the raid. The squadron pressed its attack on the oil refinery at Moosbierbaum, Austria, for which it received a second DUC. The squadron put nine bombers over the target, but was the only squadron of the group to bring all its planes home.^[3][8]

The squadron provided air support to ground forces in Operation Shingle, the landings at Anzio, and the Battle of Monte Cassino in the spring of 1944. It knocked out coastal defenses to clear the way for Operation Dragoon, the invasion of southern France, in September. As Axis forces were withdrawing from the Balkan peninsula in the fall of 1944, the squadron bombed marshalling yards, troop concentrations and airfields to slow their retreat. It flew air interdiction missions to support Operation Grapeshot, the Spring 1945 offensive in Northern Italy.^[3]

The squadron flew its last combat mission on 25 April 1945 against rail yards at Linz, Austria.^[9] Following the surrender of German forces in Italy, it flew some supply missions and transported personnel to ports and airfields for shipment back to the United States. Most of the air echelon returned to the United States, ferrying their aircraft in June. Many of the squadron's remaining personnel were transferred to other units in the 304th Bombardment Wing for shipment back to the United States, while the squadron remained in Italy, serving as a replacement depot. The last of the air echelon departed Italy in July and the squadron was inactivated on 9 September 1945.^[2][10]