There was the Warsaw uprising.

Not cross border. The only purpose German surveillance of Poland would have furthered would have been (again, with the benefit of hindsight) their own occupation. Not the safety of Germans in Germany.

If the Armia Krajowa had carried out an October 7 style attack on the German homeland, against German civilians, their memory would be mixed, not the virtually unblemished heroism they deservedly command in the historic record.

Warsaw uprising with killing babies. Sure you’re the good guys