In 1807, Napoleon went on a rabbit hunt.
His chief of staff rounded up a couple thousand tame rabbits and kept them near the hunting area. When the cage doors opened to release the rabbits, it went wrong. You see, these were TAME rabbits, and they assumed le Empereur & his guests were arriving with food. So they swarmed the "hunters".
A gigantic force of adorable fluffy bunnies jumped on Napoleon, chewed up his coat, and overwhelmed him and his armed allies, until they got into their carriages and fled away.
He won almost 63 out of his 70 battles. This was his lamest defeat.