Guys, relax. The humans took over by number and technology. Everything they had was more to date than the non-humans. Plus, with the chips, they're all controlled and can't say no. So literally every human fought in the war. I would imagine that some of the non-humans ran or decided not to fight. They were also too different and a racial gap prevented them from working together until they realized they were sorely outnumbered that way. Unfortunately, it was too late for them.