Robert Taylor’s new aerial masterwork captures perfectly the scenario on that decisive morning in November 1917. Lt. Powell (in a Bristol F2b Fighter) is seen pumping a deadly burst of machine gun fire into a diving Albatross as the aerial duel wheels and turns in a magnificent skyscape high above Cambrai.

Signed during his lifetime by famous First World War fighter pilot Henry Botterell.

The Bristol was not the most famous, but it was one of the best:

http://en.wikipedia.org/wiki/Bristol_F.2_Fighter