Also remember that their was a large post-war literature that Hitler was jewish, globalist, a rothschild stooge etc, written by ww2 veterans (usually KKK members), it is obvious cope.

Some of them might not regret it but I am suspect due to the ridiculous copes they made that no historian takes seriously.

See the book "iron curtain over America", Ron Unz has alleged that this book was read by numerous high profile US commanders, and was the second most popular book on conservatism in the 1950s. some select quotes:

In a speech before the Dallas, Texas Alumni Club of Columbia University on Armistice Day, 1950, General of the Army D wight D. Eisenhower stated that as Supreme Commander in Europe he made a habit of asking American soldiers why they were fighting the Germans and 90% of the boys said they a had no idea. Very significantly, General Eisenhower did not offer members of his Alumni Group any precise answer to his own question. The high point of his speech was a statement of his hope that Columbia might become the fountain-head for widely disseminated simple and accurate information which will prevent our country from ever again “stumbling into war” at “the whim of the man who happens to be president” (notes taken by the author, who attended the Alumni Club meeting, and checked immediately with another Columbian who was also present).

The American soldier is not the only one who wondered and is still wondering about the purposes of World War II. Winston Churchill has called it “The Unnecessary War.” In view of our legacy of deaths, debt, and danger, Churchill’s term may be considered an understatement

... The facts and conclusions thus far outlined in this chapter establish fully the validity of Churchill’s phrase “The Unnecessary War.” The war was unnecessary in its origin, unnecessary cruel in its prolongation, indefensible in the double-crossing of our ally Britain, criminal in our surrender of our own strategic security in the world, and all of this the more monstrous because it was accomplished in foul obeisance before the altar of anti- Christian power in America.