Original: The Waffen-SS, the combat branch of the SS (the Nazi Party's paramilitary organization), became the de facto fourth branch of the Wehrmacht, as it expanded from three regiments to 38 divisions by 1945.
Simplified: In 1940, the Fallschirmjäger paratroops conquered the Belgian Fort Eben-Emael and took part in the airborne invasion of Norway, but after suffering heavy losses in the Battle of Crete, large scale airdrops were discontinued.