600 years ago technology was rather more limited and armies had to make the very best of their resources - in whatever shape or form they may take. One such quest to steal a march on the enemy led to the publication of a whacky manuscript from 16th Century Germany which even considered using cats and birds to bomb opposing forces.
Called Feuer Buech, which translates from old German as Fire Book, the 235-page treatise from 1584 contains a drawing of a feline and his feathered friend with ‘rocket packs’ strapped to backs as they ran and fly past a castle.
It’s not clear whether they were actually used, but animals have for centuries been deployed in warfare, often to deliver messages or for transportation, but sometimes as weapons. In the 16th Century, a German artillery officer once presented a plan to use cats to spread poisonous gas among enemy soldiers, although it was never enacted.