"medical officer" . "Royal Air Force Medical Service" . "border|100px" . . "Medical Services" . . . . . "Medical Flight RAF" . . . . . "RAF Medical Services" . . . "Experimental Air Ambulance Service RAF" . . . "medical branch" . "Medicine" . "RAF Medical Services" . . "RAF Medical Service" . . "RAF Medical Corps" . "medical" . "Medical Branch" . "100px" . . . "1918" . . . "Director General of RAF Medical Services" . .