content: All weather and lighting sensors, armor, and weaponised and a group of these could be place at any choke point that an army wanted to defend. Put these in a mountain pass or bridge and it would really restrict an enemy's movements. They would be great as a through the door first or down a tunnel weapon. If you made it strong enough it could carry all of the heavy platoon stuff while on the move. I don't see how this won't eventually happen. I don't see that it has to end up looking humanoid. It could just as easily be a sphere with legs and tool appendages.