Here is an article that profiled Hitler's director of the NSDAP (National Socialist German Workers' Party), and the political differences that led to his resignation.
"Hitler was hard hit when Gregor Strasser
(1892 – 1934), one of his ablest and oldest supporters, broke away from him. It happened in one of the fights between rival factions in the Hitlerite movement which followed losses sustained in the November Reichstag elections."
"Profound gratitude is due Strasser from Hitler because when Hitler was released from jail, there was at least a nucleus of his party left, so that its reconstruction did not have to begin in a void. Gratitude was expressed on Hitler's part when he made Strasser chief of his propaganda work."
He was murdered in his prison cell during the Night of Long Knives (June 30, 1934).
Read about the German POWs who
were schooled in virtues of democracy.