Bat bombs, corkscew tanks, guns that shoot around corners, aircraft carriers made out of ice and wood pulp or landing strips built on top of zeppelins. Crazy stuff that goes beyond war tubas but ranks up there with the First Earth Battalion. Check it out: Weird Military Innovations: 10 Crazy Weapons of War
A note about the anti tank dogs. I don’t know if this is true but I heard a story about the first time the Soviets deployed these dogs on the battlefield. Once unleashed the dogs ran out towards the enemy, paused and then turned back, running under the tanks of the Soviets! The plan had backfired in the worst possible way. You see, the dogs had been trained to run under tanks by putting raw meat under training tanks. Soviet training tanks. When the dogs went to war they looked at all the different types of tanks on the battlefield and knew “where the meat was” so to speak, and ended up turning on their masters.
ADDENDUM: Wikipedia knows all!
Soviets used their own diesel-engine tanks to train the dogs rather than German tanks, which had gasoline engines. As the dogs relied on their acute sense of smell, the dogs sought out familiar Soviet tanks instead of strange-smelling German tanks.