The unmanned drones the U.S. military employs are just the tip of the iceberg as far as its ambitions with robot technology are concerned. (See this demo video of a Starship Troopers-style exoskeleton if you need convincing.)
Now, even the good ol' packhorse is getting a robotic upgrade. This demo video of a four-legged robotic pack mule released by the Defense Advanced Research Projects Agency seems all well and good until you see a group of the robots walking around, scanning with front-mounted cameras. Then it suddenly seems really, really creepy.
Prepare to be ruled by robot donkeys.