Imagine you are in battle, probably scared out of your wits, and then enemy troops start flinging snakes in your face. The ancient Greeks did just that, says a group of researchers who rediscovered a species of boa in Sicily used in warfare, which had not been seen in nearly a century. It was a case of biological, psychological and unconventional warfare all wrapped up in one terrifying tactic. Horses and camels have been used as war animals probably since there was warfare. Hannibal and others, including Asians, used elephants in warfare. Many armies have used dogs in war in various ways. The Romans used scorpions. Various warring people have used carrier pigeons to deliver messages from and to the
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