Genealogy / Does anyone have any relatives who served with 1st Polish Armoured Division (Gen. Maczek) [311]

Thank yo so much. Do you know where to write? Do you know what kind of proof they require. I do not know if I can get my mother's or his birth certificates because I do not even live in Poland, perhaps just mine showing my mother's maiden name. Is there any internat site which lists the names of the soldiers, in which division they served?