Armies Race to Deploy Drone, Self-Driving Tech on the Battlefield

Robotic vehicles are taking aim at the modern battlefield.

In Israel, semi-automated vehicles patrol some of the country’s borders. The U.S. Army is working on trucks that can drive themselves in a convoy. Russia, at a military exhibition in August, showed off the Nerekhta, a machine-gun firing—and self-driving—mini tank.

Foot soldiers for...