"Royal Air Force Operations in the Middle East and North Africa, 1939-1943." Supermarine Spitfire Mark IXCs of the Polish Fighting Team (Skalski's Circus) attached to No. 145 Squadron RAF, run up their engines at Goubrine Airfield in Tunisia. In the foreground is EN315 'ZX-6', flown by the unit's Commanding Officer, Squadron Leader Stanisław Skalski, with EN261 beyond.