Hitler was very upset by the heavy losses suffered by the parachute units, and came to the conclusion that their surprise value had passed. After that he often said to me: "The day of parachute troops is over." He would not believe reports that the British and Americans were developing airborne forces. The fact that none were used in the St. Nazaire and Dieppe raids confirmed his opinion. He said to me: 'There, you see! They are not raising such forces. I was right.' He only changed his mind after the Allied conquest of Sicily in 1943. Impressed by the way the Allies had used them there, he ordered an expansion of our own airborne forces. But that change of mind came too late - because by then you had command of the air, and airborne troops could not be effectively used in face of a superior air force.