Question....WOULD had Poles fighted along german troops against the Soviets if the pushes came to shove?
This is such a loaded question. Had the Germans not committed 760 war crimes in the September campaign against the Poles and Jews, had they not had the insane idea that they were the masters of Europe and deserved to anihilate and/or enslave the people east of them to make room for the master race, had they not made these kind of alliances: en.wikipedia.org/wiki/Gestapo-NKVD_Conferences
cooperation would have been possible. After all, Poland had experience in fighting the Soviets; the Germans had not and had sent their boys to fight in the cold dressed in shorts.
The list of had they not is so long that its mind bogling, but of course we get Harry the Shill jumping in to point out small AK or NSZ unit who accepted arms from Germans to fight the Soviet filth. Harry is wise to quote Piotrowski's book, it's chapter on Polish collaboration should be compared with the preseeding chapter on Jewish collaboration. It is a good read.
Brat Boy, Here is a good book you might want read that I think you will enjoy. Written by a LSSAH soldier, no propaganda, just first hand account: Verlorene Ehre, Verratene Treue by Herbert Meager: /Verlorene-Ehre-Verratene-Zeitzeugenbericht-Soldaten/dp/