Greets from Germany

Welcome to FABO from Canada, my grandfather was from Germany.
He immigrated to Canada after the first world war which he fought for Germany.
My father fought in the second world war for Canada/the allies.
My grandfather never forgave him for that.
My last name is Zimmer, is it common over there?

Thanks!
Nice story!
Yes, "Zimmer" is common over here! ;)