And bind the sack to the back of the cat, ignite it, let it glow well and thereafter let the cat go, so it runs to the nearest castle or town, and out of fear it thinks to hide itself where it ends up in barn hay or straw it will be ignited." http://www.independent.co.uk/news/world/europe/i-can-haz-rocket-16thcentury-warfare-manual-showing-rocket-cats-weaponry-puzzles-experts-9173808.html
Sounds like a variant of the flaming pigs known to the ancient world http://en.wikipedia.org/wiki/War_pig I suppose cats were cheaper and the war elephants threat lower in medieval Germany. Sadly the rocket assisted cat is a phenomena not unknown in less civilized parts of Britain especially close to 5th Nov ,