Not so fast, my friend.
Hitler excommunicated himself through his actions; Church teaching is very clear on the matter. For that matter, the Church has not "excommuicated" Ted Kennedy, who through his incessant promotion of and largesse (public and private) to Planned Parenthood has WAY over-earned the public announcement of his excommunication.
WIthout the polemic, people excommunicate themselves. The Church's paperwork is always 'after-the-fact' and generally is not even sent.
As to "historic" anti-semitism--you will have to go a long way to prove that. While it is true that numbers of Christians are PERSONALLY anti-Semitic, it is flat-out UNTRUE that the Churches are so.
Hitler did exactly what he had learned (Marx was certainly not the first propagandist to come up with this): demonize somebody--ANYbody. The Jews were quite handy, and a small minority.
Finally, as to the Church's "Punishing" Hitler's regime: you must be kidding. Exactly whose Army was the Pope going to send? Should the Church have sent a Cardinal to Hitler with an engraved invitation to a trial in Rome? And which jails does the Church run?