On the first day of April, French pilot Roland Garros shot down a German aircraft during air engagement. It was not an ordinary event, but a real revolution for military aviation. Garros taught the planes to shoot. Jointly with engineer Raymond Saulnier, he designed a device that allowed for putting down machine-gun fire through the propeller. Garros earned fame even before the war having set several records of nonstop flights. World War I added the fame of inventor and hero to the list of his achievements. The legendary pilot was brought down four times, an each time he would escape from the prisoner camp. The French did not forget their hero. His name is recalled especially often in early spring, when French Open is held at tennis stadium Roland Garros in Paris.