In Churchill’s “finest hour” speech, perhaps the ultimate highlight in the career of history’s greatest Briton, he beseeched his people to brace for the most pivotal battle in modern history. 

And while the allied victory in World War II is no doubt his most famous achievement, his investment in the Anglo American alliance through both his terms in office has to rank as one of his most long-lasting and impactful. 

Indeed, when news of the Japanese attack on Pearl Harbor reached Churchill in December 1941, he immediately realized what that meant; the United States would now have to take up arms.