Fighter aircraft
Fighter aircraft of both the Allied Powers and the Central Powers occasionally made use of the a skull and crossbones emblem in World War I, either by itself or as part of a more complex insignia, more often by individual pilots, and in rare instances, by entire aviation units. The most memorable of these insignia were on the series of French fighter aircraft flown by French 43-victory flying ace Charles Nungesser. All of his aircraft featured his personal "black heart" insignia on the sides of the aircraft's fuselage. The Nungesser insignia centered on a skull and crossbones accompanied by a coffin directly above the skull, and flanked with single candlesticks, all within the black heart-shaped field.