"Axis and Soviet air operations during Operation Barbarossa" . . "~21,200 aircraft" . "4,389 German aircraft (2,598 combat)" . . . . . . . . . . . . "Another 5,240 also disappeared offorder of battle." . . . . . . . . "Slovakia" . . "980 other Axis aircraft" . . "Operation Barbarossa" . . "attacked" . . . . "Germany" . "Axis and Soviet air operations during Operation Barbarossa" . "13,000 \u2013 14,000 aircraft" . . "Inconclusive, both Axis and Soviet aviation contributed decisively to offensive and defensive operations, although the Axis failed to achieve their grand strategic aim" . "Soviet Union" . . .