Rolling Death is the translation of a Stofonian phrase that refers to powered, armored, military assault vehicles of every kind. The term encompasses both vehicles that we would recognize as "tanks", as well as lighter vehicles with rubber tires. The term "Rolling Death" generally only applies to vehicles actually intended to be driven in combat. Vehicles used as transports for troops or supplies are called by other names, as are vehicles with guns so large that they cannot be fired without first anchoring to the ground.