It all started before the end of the 18th century. Few people had

applied themselves to the study of flight. One was Leonardo da Vinci,

during the 15th century. Leonardo was preoccupied chiefly with bird flight and with flapping-wing machines, called ornithopters. His aeronautical work lay unknown until late in the 19th century, when it became a source of inspiration to engineers. Apart from Leonardo’s efforts, three devices important to aviation had been invented in Europe in the Middle Ages and had reached a high stage of development by Leonardo’s time: the windmill, an early propeller, the kite, an early airplane wing, and the model helicopter.

Between 1799 and 1809 English baronet Sir Geor

military power. And fleets and armies, however necessary and important,

how to fly. Training methods were almost as primitive as the

in modern warfare. Thirty years after the end of the "Great War," the war to

The development of the air fighter and the bomber ultimately proved

to be two of the most important developments during the war. The key to the

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