First trialled in 2006, the SGR-1’s are machine-gun wielding robots, built by Samsung, and have heat and motion detectors to identify potential targets more than 2 miles away.

The SGR-1 has a 5.5mm machine gun and a 40mm grenade launcher – although needs a human operator to give it the go ahead to fire.

South Korean forces have installed the robots along the border of North Korea.

2006 — SGR-1