The American public seems to be okay with our endless wars and overseas conflicts, especially when few of our men and women die, or are even in harm's way. So that with the American military having the most powerful military instruments as well as the most dominating military budget in the world, and with no other single country coming close to what America represents in both military muscle as well as military killing power, America rules alone. This means that America is never behind the curve, in fact, they are forever pushing the curve, day after day, dollar after dollar, but they are clearly cognizant that Americans, for the most part, aren't thrilled about "boots on the ground", so the military has been relentless in adapting to this new paradigm. That is a good reason why, America bombs countries at an exceedingly high rate, for those bombs have mighty destructive power, but with virtually no risk of the bombardiers being harmed, further to the point, purely automated drones, eliminate the human risk completely, which is the direction and tendency that America is ceaselessly gravitating to.
This then means, with the air effectively controlled by either semi-automated weaponry, and advancing leaps and bounds to fully automated weaponry, the next frontier to control via robotics and their equivalency is the ground. While one can make a very strong case for robotics being a valuable tool that provides real actionable information by being sent, for instance, into a warehouse or building to examine, inspect, and reconnaissance, the real upshot is, if a machine can do that much, it isn't much more to decide to make it fully lethal by adding munitions to it, or to its automated sidekicks, so that if the biggest risk while taking down a block, house by house, are the houses, the snipers, and so on and so forth, one could easily imagine sending not the Marines in first, but the robots instead, to search, target, and destroy, with real human soldiers, only coming in to clean up the aftermath.
Additionally, it doesn't take all that much more science to take robots that are controlled remotely, with a human viewing the landscape and thereby engaging the enemy through the robots, to fully automated robots that are programmed to engage the enemy, upon perceiving enemy fire, or upon the recognition of human body heat, and so on and so forth. The thing about fully automated robotics used in military conflicts, is that for a certainty, the actual robot has no conscience whatsoever, so these terminator robots should as a matter of humanitarian principle, alone, never be allowed to be manufactured or utilized. So too, any semi-automatic robot, controlled by humans who are far removed from the action, of which these humans are in no danger, but permitted to push the buttons that target "enemy" human life, must be constrained per international agreements, for the further remove a given human being is from the action, the further down the chain-of-command that the individual is that triggers the action, the easier it is for that human individual to not comprehend or take personal responsibility for those targets being identified and engaged, which makes it uncomfortably easy to calculate coordinates and kill human life.
The day in which robotics are utilized as autonomous killer machines would be disastrous for human life, so too, robotics that kill and that are being controlled to do so by humans, should be internationally restrained, banned, and eradicated, for the more remove that human consciousness and human responsibility is from war zones, the more war and the more killing we will have.