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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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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A WW2 observation pilot, bored of not being in combat, decided to strap 6 bazookas to his plane. He destroyed several enemy tanks and vehicles. His name was Lt. Col. Charles Carpenter, aka Bazooka Charlie / The Mad Major.
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Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
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During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
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