 In September 1944 Johnson 's wing participated in support actions for Operation Market Garden in the Netherlands . On 27 September 1944 , Johnson 's last victory of the war was over Nijmegen . His flight bounced a formation of nine Bf 109s , one of which Johnson shot down . During this combat Squadron Leader Henry " Wally " MacLeod , of the Royal Canadian Air Force , and his squadron had joined Johnson . It was during this action that MacLeod went missing , possibly shot down by Siegfried Freytag of Jagdgeschwader 77 ( Fighter Wing 77 ) . 
