Originally Posted by Triple C

As someone who had read so hard about World War II I am ashamed to ask this question, but Panzer IV ausf H has 80mm of armor at the front turret and hull, which in theory should protect it against the 75mm gun on the Sherman tank at ranges under 500 yards. So, why haven't I read anything about those damned invicible Panzer IV Hs? Why was it that no allied tanker had ever complained about Pz IV ausf H's thick, theoretically inpenetrable armor?