The Army has outlined draft objectives for a range of Robotic Combat Vehicles, from an expendable light scout armed with a single anti-tank missile to a 30-ton unmanned tank as tough as the 70-ton M1 Abrams.
In the 2001 National Defense Authorization Act, Congress set an objective of increasing the number of remote-controlled and unmanned systems in service with the US Army. The goal was that by 2015 a third of operational ground combat vehicles would be unmanned. However, this goal was not met. Scott Alexander reports