September, 1944; Parachutes open as waves of paratroops land in Holland during operations by the 1st Allied Airborne Army. Operation Market Garden was the largest airborne operation in history, with some 15,000 troops landing by glider and another 20,000 by parachute.
Enigma Machine - Enigma Machine During World War II, the Germans used the Enigma, a cipher machine, to develop nearly unbreakable codes for sending messages. The Enigma's settings offered 150,000,000,000,000,000,000 possible solutions, yet the Allies were eventually able to crack its code. By end of the war, 10 percent of all German Enigma communications were decoded at Bletchley Park, in England, on the world’s first electromagnetic computers.