After some months on home service, he returned to France at his own request to take part in the Allied offensive. Gonne was reported as missing on 8 August 1918; having last been seen flying over the Somme River at Brie, some 15 miles behind the German front lines. In "The Times" of 12 December 1918 it was reported that he had died in a German field hospital at Villers-Carbonnel. He is buried in Heath Cemetery in Harbonnières, France.