After Pearl Harbor, like all Americans working in Germany, Herbert John Burgman of Hokah, Minn, got a chance to return home. But in 20 years of clerking at the American Embassy in Berlin, Herbert Burgman had acquired a German education, a German wife, a son—and an unbounded admiration for Adolf Hitler. He went to work for the Nazis, spouted radio propaganda at the U.S. on the program called "station D-E-B-U-N-K." He blamed Franklin D. Roosevelt and "his Jewish and Communistic pals" for World War II, promised that things would be better when he himself became President.
Instead of becoming President, Herbert...