During World War 1, Harry Houdini took 1 year off performing to help sell war bonds and teach american soldiers how to escape from German handcuffs.
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A singing birthday card has more computing power than the allied forces in 1945.
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The flag of the Philippines is flown with the red stripe up in times of war and blue stripe up in times of peace.
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The Canadian province of New Brunswick (which was part of the UK at the time) had a bloodless war with the US state of Maine in 1839
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