25 July  1915
War in the Air
 The British ace Lanoe Hawker, with help from air mechanic Ernest  Elton developed a machine gun mount for attaching a Lewis gun to a Bristol  Scout. While testing this on 25th   July 1915 he drove off one German aircraft and downed two others,  despite all three enemy aircraft being machine gun armed and two seaters. For  this he earned the VC (Victoria Cross) being the first pilot to earn a VC for  aerial combat. 
How to cite this article: Rickard, J (28 December 2007), 25 July  1915, https://www.historyofwar.org/firstworldwar/daybyday/1915_07_25.html