Richthofen's subsequent medical treatment disclosed that the bullet that hit him may have come from behind. Despite Cunnell and Woodbridge's confirmed claim for this aerial victory, Richthofen may have fallen from fire from one of the other FE.2s of 20 Squadron, from being shot down by Raymond Collishaw, or even from one of Collishaw's wingmen from 'B' Flight, 10 Naval Squadron such as William Melville Alexander, Ellis Vair Reid, or Desmond Fitzgibbon.Guttman & Dempsey (2009), pp. 87–88.
