[Henk Welting]

Also may add that Col Henri Lafont in his "Aviateurs de la liberté" (Mémorial des Forces Aériennes Françaises Libres) mentions for Oulman and his PV143:
"........est touché par la Flak lors du mitraillage d'un convoi routier allemand, près de Rosendael (Pays-Bas)" and Rosendaal is a small town just east of Arnhem. (Hit by machine gun fire from a German military road column). Glycol leak, engine problems, and - as the crow flies - a crash location near Wehl is nearly self-evident. The French MoD also confirms that Oulman died "near Arnhem".

Another possiblity could be that he indeed could escape from his captors and later was killed as there were heavy fightings in that area because 8-2-1945 was the start for operation Veritable, the mass attack of the Allies on the Rheinland.

A first burial location before being reinterred into the Reichswald Forest War Cemetery could be worthwhile to know.

Henk.