Glider infantry (also referred to as airlanding infantry esp. in British usage) was a type of airborne infantry in which soldiers and their equipment were inserted into enemy-controlled territory via military glider. Initially developed in the late 1930s by Germany, glider infantry units were used extensively during World War II but are no longer used by any modern military. Early history With the treaty of Versailles preventing any other form of pilot training in Germany, large numbers of gliding clubs and schools were formed there after World War I. Later, when planning the invasion of France, the German military was faced with the problem of the Belgian fort of Eben Emael which dominated the River Meuse. Someone (according to some reports, Adolf Hitler himself) pointed out that the top of the fort was a flat grassy expanse on which gliders could land. Eight DFS 230 gliders, carrying 85 Pioneers under Lieutenant Rudolf Witzig, landed on the roof of the fort in the early hours of May 10, 1940. There had been no declaration of war, and they achieved surprise. Using the new shaped charges, they disabled the fort's guns and trapped the garrison inside. The assault cost 21 casualties. In the aftermath of this episode, the Allies formed their own glider forces, as part of their airborne forces. Before they could see action, the Germans had made their largest airborne operation, the attack on Crete. Their glider troops and paratroops suffered heavy casualties, and the Germans decided that this mode of warfare was too costly. A subsequent plan for the invasion of Malta which called for extensive German and Italian airborne operations was cancelled. The Italian 80th La Spezia division was specially trained for airlanding operations, but never took part in any after the Maltese invasion was cancelled and it was instead deployed in the Tunisian Campaign. In 1940, Winston Churchill, the British Prime Minister, decreed the formation of a British glider force of 5000 gliders. American plans were on a similar scale. Allied organization The gliders which were most widely used by the Allies were the American-designed Waco CG-4A, which could carry 13 passengers, and the British-designed Airspeed Horsa, which could carry 25 passengers. Both of these aircraft used plywood extensively in their construction, with the CG-4A also using aluminium to provide greater strength in its framing. To deliver especially heavy loads, the British General Aircraft Hamilcar could carry