Is it okay for the military to use animals in combat?

I didn't know that the military trains these kind of animals to help in the military. I think that it is a good idea, because it does help the military win the wars. I think that it is actually a clever idea. I especially like how they trained the bees to search for bombs and bomb areas. I understand why some people would find it wrong, because the animals have no choice but to do what they're trained to do.