[3] The ground echelon moved to Geiger Field, Washington in May 1943 and to Great Falls Army Air Base, Montana, in July.

After staging at Camp Shanks, New York they embarked on the RMS Queen Mary and sailed on 27 October disembarking at Greenock on the Firth of Clyde on 3 November 1943.

[7] The squadron operated chiefly against strategic targets, bombing industries, submarine facilities, shipyards, missile sites, marshalling yards, and airfields.

[2] On 11 January 1944 the squadron was in the lead group of the 1st Bombardment Division in an attack against aircraft manufacturing facilities at Oschersleben, Germany.

Although the bombers were able to attack, poor weather conditions prevented the division from receiving effective fighter cover.

[2][8] A little over a month later, on 20 February, the squadron earned its second DUC for an attack on the Erla Maschinenwerke aircraft manufacturing facilities in Leipzig, Germany.

Despite fighter attacks and battle damage to the 613th's planes, 100% of the unit's bombs fell within 1000 feet of the aiming point.

[12] After V-E Day, the squadron flew missions to Linz, Austria to evacuate British and French prisoners of war.

It also flew "Trolley" sightseeing missions at low level, flying ground support personnel over the Ruhr and Frankfurt am Main to see the damage that had been done as a result of their efforts.

[18] President Truman's reduced 1949 defense budget required reductions in the number of units in the Air Force,[19] and the 613th was inactivated in June.

[1] The squadron participated in firepower demonstrations military exercises and maneuvers, and deployed aircraft and personnel to Europe and the Middle East to support NATO.