Rooster, yes I DID know about von Lettow! I read about him prolly 1953, I would have been eight years old (i.e. 65 years ago), and I remembered his name all this time.... But I did not know that about refusing Hitler...
Anyway my father subscribed to a man's magazine called TRUE, and it had wonderful articles like this one about von Lettow. Over the years I have asked people about him, but you are the only one who has known his name, and so I am delighted! Just now I found this:
"Essentially undefeated in the field, Lettow-Vorbeck was the only German commander to successfully invade imperial British soil during the First World War. His exploits in the campaign have been described as the greatest single guerilla operation in history, and the most successful."
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I see that he lived to be almost 94 years old (1870-1964), so he was still alive when that article was published in 1953!