Countries like US, Russia and china are racing to deploy ground combat robots or UGVs, and testing their effectiveness on battlefield

An unmanned ground vehicle (UGV) is a vehicle that operates while in contact with the ground and without an onboard human presence. Generally, the vehicle will have a set of sensors to observe the environment, and will either autonomously make decisions about its behavior or pass the information to a human operator at a different location who will control the vehicle through teleoperation.  There are a wide variety of UGVs in use today. Predominantly these vehicles are used to replace humans in hazardous situations, such as handling explosives and in bomb disabling vehicles, where additional strength or smaller size is needed, or where humans cannot easily go. They are also used in industries such as agriculture, mining and construction.