Red Tails — Romania
Escort missions to the heavily-defended Ploiesti refineries — which supplied roughly one-third of Germany's oil.
Ploiesti was one of the most dangerous Allied bombing targets of the war. The 1943 low-level raid (Operation Tidal Wave) cost 54 of 177 attacking aircraft. The 332nd escorted bombers on multiple high-altitude Ploiesti missions in 1944. Romania switched to the Allied side in August 1944, ending the threat.