Bulldozer

A bulldozer is a piece of heavy construction equipment, characterized by a movable blade for pushing earth or other materials, which is mounted on the front of a powerful tracked vehicle with immense traction on rough surfaces. Bulldozers may be equipped with other construction equipment powered from the main vehicle, such as a backhoe or winch.

U.S. Army general purpose bulldozer (Caterpillar D7)

Some bulldozers, intended for military use, may be armored to protect the operator and vital components. Bulldozer-like blades are sometimes attached to the front of tanks or other armored fighting vehicles to give them a secondary field engineering capability, to add to their combat function.