From After iRobot Split, Endeavor Rides Growth in Military Robot Spending:

PackBot
PackBot

The first PackBots were deployed in Afghanistan in 2002 to help U.S. soldiers searching tunnels and cave complexes in the Hindu Kush mountains. Since then, more than 4,500 of the robots have been delivered worldwide by iRobot (and now Endeavor Robotics) to help military and law enforcement customers with bomb disposal, surveillance and reconnaissance missions, and hazardous materials situations.