What is the Japanese word for their war cry?

Bonzai! Which roughly translates to the Japanese empire will last 10000 years. I always laugh and the folks that use Bonsai in their company/club names thinking that was the war cry. That's nipping itty-bitty trees with small scissors. Bonzai is "I'm coming over this wall with a bayonet on the end of my rifle and I don't intend to survive, but through my actions my empire will." Brad