Tryggve Gran's Amazing StoryThe Antarctic explorer and advisor to the failed Scott Expedition, who was the first solo flyer across North Sea, joins the RFC after using fake name. He allegedly shoots down Hermann Göring five months later; befriending him after war.
(from the Sunday Morning Star, 15 April 1917):


(Photograph published in his 1919 Memoir, '"Under Britisk Flag - Krigen 1914-1918"