Some time ago the dog (which is more of a mule, as it’s intended for weight-bearing primarily) was unveiled. It’s not, I think, finished, but it’s clearly pretty advanced. The robotic beast of burden has phenomenal balance, a steady pace and the ability to walk on pretty much any terrain.
Now the clever chaps at Boston Dynamics have created a robotic cheetah, which has recently broken the speed record for robots (now 18mph, having previously been 13mph).
Technological progress and non-human combatants have always been critical in warfare. Whether exceptional cases (Hannibal’s use of snakes in naval warfare or Wojtek, the Polish bear who fought in WWII) or more common ones (elephants, horses, camels) they can add a tactical or strategic advantage.
I think robotics could play a great role in logistics and intelligence (it’s not hard to imagine even more advanced surveillance robots as well as the dog or cheetah above), but I’m doubtful as to whether armed robots would be wise. They’d need to be able to differentiate between enemies and allies and I don’t know whether that will ever be possible, given the wide variety of context. If a robotic mule breaks then gear has to be carried by something else, but if a robotic velociraptor broke down it could pose a serious risk to civilians or its own side.