Originally Posted by Laurent Rizzotti

I think you are just at the start of your search. Here are some Australian airmen that were lost flying fighters over Europe in summer 1944:

Nom Service Number Aircraft Serial Place Date
OXLADE, Arthur Geoffrey - (Squadron Leader) 400733 Mosquito NZ897 Gueures, France 06/06/1944
HOWARD, George John - (Flight Sergeant) 420883 Typhoon JP604 Caen, France 06/06/1944
ROBERTS, Alfred Ernest - (Flying Officer) 409775 Typhoon M454 Frenouville, France 06/06/1944
ROGGENKAMP, Neil - (Warrant Officer) 414598 Mustang FX959 near Bernay, France 07/06/1944
STOKES, Gordon Jeffrey - (Warrant Officer) 412747 Typhoon LK863 Calvados, France 07/06/1944
KAIRTON, Donald Bernham - (Warrant Officer) 414694 Mustang F882 Gue De La Chaine, France 14/06/1944
SAINT-SMITH, James Alexander - (Flying Officer) 403380 Mosquito DZ516 Vaulx, France 29/06/1944
MILLER, Graeme Morrison - (Flight Sergeant) 422227 Mosquito MN423 Menil-Hubert-Sur-Orne, France 08/08/1944
WALLACE-WELLS, Hugh Graham - (Warrant Officer) 32266 Spitfire NH201 France 17/08/1944
GILBERT, Ronald Desmond - (Warrant Officer) 413188 Typhoon Vimoutiers, Normandy, France 19/08/1944
FROST, John Thomas Naldrett - (Pilot Officer) 412514 Typhoon MN719 Vimoutiers, France 20/08/1944

Details given above are from their "casualty and repatration (sp?)" files. The list is not exhaustive....