Problem is if they really count as collaborateurs in the common sense.
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The history of Poles in the Wehrmacht, the unified armed forces of Nazi Germany, began with the German invasion of Poland in 1939. More than 400,000 citizens of the Polish Second Republic served in the Wehrmacht,[1] and not many in Kriegsmarine and Waffen SS. The majority of these Polish citizens were Poles of German extraction (Volksdeutsche), Silesians, Kasubians, and Masurians. Some of other Polish citizens of Ukrainian, Belarusian, Russian, and Lithuanian origin serve in German military units, both in Wehrmacht and the Waffen SS.
Of course they supported the enemy of the nation they were citizens of but patriotic Poles did the same during the partitions, fighting against Prussia for France for example.
If those non-ethnical polish citizens felt allegiance to Germany I don't think it can be seen as collaboration or betrayal...IMHO....or what do Poles think?