With an Army of human soldiers sacrificing their lives for the sake of war why not throw a few dogs in the mix.
Long story short: They teach the dogs to look for food under tanks and then deprive them of food for days before an invasion. The dogs were strapped with explosives with a foot and a half long pole sticking straight up on the back. The dog darts under the tank hungrily looking for food which triggers the explosives and destroys the tank
Iraqi insurgents used dogs strapped with explosives in 2005 but had no success
Panzerhaubitze PzH 2000 tank - Future Weapons
5 shot revolver shotgun
Females of World of Weapons
Worlds most powerful revolver S&W's 500 magnum