The artist is Merv Corning, the print comes from an outstanding series of pieces he did for the Leach Corp. , primarily in the late 1960's i believe.
THis one depicts the fifth victory for
Douglas Campbell, the storyline is that Campbell "tussled" with the Rumpler and the German observer stood up as depicted after he had used up all his ammunition. Campbell hesitated to attack the then nearly defensless German: but decided he needed to since the plane, after all, could then return with its information and photos. I am typing this from memory, as my print is back home.
THe original may well be at the US Air Force Art Collection, which is very , very good. You can google Leach Corp., go to their website and find out about Merv Corning( who passed away several years ago) and his series of illustrations on WWI avaition.
jim