I think you are both way off, we can't get a robot to flip a burger[0] it's going to be a long time for a robot to replace a special forces solider. They aren't just dumb manpower, we are talking a strategist, weapons specialist, paratrooper, negotiator plus a dozen other roles all in a 6 foot tall, 200 pound package that can go into a country and forage off the land for months while waiting for the perfect opportunity to complete it's mission.

[0] I know you can find something on Youtube but if it really worked at scale McDonalds would be rolling them out yesterday.