Black Knight - Prototype of unmanned - Tanks. Being tanks

Experimental combat vehicle Black Knight

SimplePlanes BAE Systems Black Knight UCGV

Video showing AT Black Knight Transformer's first flight released

Is the military anywhere near making an unmanned armored vehicle (like a tank)? - Quora

Black Knight – Armed Robotic Armored Vehicle - Defense Update

List of main battle tanks by generation - Wikipedia

30 of the best tanks and armoured vehicles of all time

Manned unmanned teaming hi-res stock photography and images - Alamy

The Army's Long-Range Howitzer Has Met Its Achilles Heel

Black Knight - National Robotics Engineering Center - Carnegie Mellon University