am and lasted for nearly eight hours, during which time Garros resolved two engine malfunctions. The following year, Garros joined the French army at the outbreak of World War I. Myth of first air battle Reports published in August 1914 claimed Garros was involved in the "first air battle in world history" and that he had flown his plane into a Zeppelin, destroying the airship and killing its pilots and himself. This story was quickly contradicted by reports that Garros was alive and well in Paris. Such early reports maintained that an unidentified French pilot had indeed rammed and destroyed a Zeppelin, however, German authorities denied the story. Later sources indicated the first aerial victory against a Zeppelin occurred in June 1915 and earlier reports, including that of Garros, had been discounted. Development of interrupter gear In the early stages of the air war in World War I, the problem of mounting a forward-firing machine gun on combat aircraft—without having the bullets hit the propeller—was considered by several people. As a reconnaissance pilot with the Escadrille MS26, Garros had made several attempts at shooting down German aircraft; however, these efforts were unsuccessful due to the difficulty in hitting an aircraft with a hand-held carbine. He visited the Morane-Saulnier works in November or December 1914 to discuss the problem. Raymond Saulnier had begun work on a synchroniser (which times the firing of the gun with the position of the propeller) before World War I and had taken out a patent for a workable mechanism by 14 April 1914, however circumstances beyond his control resulted in its being tested with the Hotchkiss 09/13 portative machine gun, which proved unsuitable due to an inconsistent firing rate. As a workaround, Garros, with the help of his mechanic, Jules Hue, developed protective wedges, which were fitted to the slightly narrowed propeller blades which deflected the occasional round which would have otherwise struck the propeller. With a workable installation now fitted to his Morane-Saulnier Type L parasol monoplane, Garros achieved the first ever shooting-down of an aircraft by a fighter firing through a tractor propeller, on 1 April 1915 and two more victories over German aircraft were achieved on 15 and 18 April 1915. The Aero Club of America awarded him a medal for this invention three years later. On 18 April 1915, Garros was hit by ground fire, and he came down in German-controlled territory