The war is a war of machines; it will be won on the assembly line.
- Lord Beaverbrook, Minister of Aircraft Production Just as vital as the battle on land or the struggle at sea, the air war ultimately tipped the balance of power in World War II.
Many campaigns rode on the capabilities of their airforce, as British Spitfires were pitted against Messerschmitt Bf 109s and Japanese Zeros.
Aerospace expert David Baker explores this battle in the.