Re-equipped with more modern B-17F Flying Fortresses and assigned to II Bomber Command in Pacific Northwest for transition and combat training in late 1942 and early 1943. Moved to North Africa in April 1943, carrying out bombing missions in Algeria and Tunisia as part of Twelfth Air Force during the North African campaign. Flew many support and interdictory missions, bombing such targets as marshalling yards, airdromes, troop concentrations, bridges, docks, and shipping. Participated in the defeat of Axis forces in Tunisia, Apr-May 1943; the reduction of Pantelleria and the preparations for the Allied Invasion of Sicily, May-Jul 1943; the invasion of Italy, Sep 1943.