As in the campaign against Poland, it was the Luftwaffe that had perhaps the most important role. It won air superiority over the theatre of operations and was able to destroy much of the enemy’s material before the army swept forward. This is the second volume in a new series that examines in detail the Luftwaffe’s role in the battles of the Spring and Summer of 1940 and will be required reading for all aviation historians as well as those who model the aircraft of the period.