Hitler was not much of a Catholic...he didn't even like the Catholic Church.
The following is a selection from pages 9 through 11 of Chapter 1, "Hitler," of the 1938 edition of Mr. John Gunther's Inside Europe
[Adolph Hitler's] Attitude Toward ReligionHe was born and brought up a Roman Catholic. But he lost faith early and he attends no religious services of any kind. His Catholicism means nothing to him; he is impervious even to the solace of confession. On being formed his government almost immediately began a fierce religious war against Catholics, Protestants, and Jews alike.
Why? Perhaps the reason was not religion fundamentally, but politics. To Hitler the overwhelming first business of the Nazi revolution was the "unification," the Gleichschaltung (coördination) of Germany. He had one driving passion, the removal from the Reich of any competition, of whatever kind. The Vatican, like Judaism, was a profoundly international (thus non-German) organism. Therefore -- out with it. ...
Catholicism he considered a particularly dangerous competitive force, because it demands two allegiances of a man, and double allegiance was something Hitler could not countenance. Thus the campaign against the "black moles," as Nazis call priests. Several times German relations with the Vatican neared the breaking point. Protestantism was -- theoretically -- a simpler matter to deal with, because the Lutheran Church presumably was German and nationalist. Hitler thought that by the simple installation of an army chaplain, a ferocious Nazi named Mueller, as Reichbishop, he could "coördinate" the Evangelical Church in Germany, and turn it to his service. The idea of a united Protestant Church appealed to his neat architect's mind. He was wrong. The church question has been an itching pot of trouble ever since. All through 1936 and 1937 it raged.
It was quite natural, following the confused failure to Nazify Protestantism, that some of Hitler's followers should have turned to Paganism. The Norse myths are a first-class nationalist substitute. Carried to its logical extreme, Naziism in fact demands the creation of a new and nationalist religion. Hitler has indicated this in a speech at Nuremberg in September, 1935. "Christianity," he said, "succeeded for a time in uniting the old Teutonic tribes, but the Reformation destroyed this unity. Germany is now a united nation. National Socialism has succeeded where Christianity failed." And Heiden has quoted Hitler's remark, "We do not want any other God than Germany itself." This is a vital point. Germany is Hitler's religion.
One of Hitler's grudges against God is the fact that Jesus was a Jew. Another is a nationalist grudge again. The basis of the Nazi revolution was the defeat of Germany in the War. Thus religion had to be Nazified because no God who permitted the French and any other "inferior" races to win the War could be a satisfactory God for Germany...