Military tractors and bulldozers are used for construction and for towing heavy loads. They often fill in for other vehicles where their extreme maneuver capabilities and heavy towing capacity are indispensable. Bulldozers have even served as assault vehicles, moving against enemy positions with a dozer blade, when nothing else was available. Some of the tractors/bulldozers used by the military are minimally adapted civilian models while others have been designed specifically for military missions.
Other earthmovers, such as graders and scrapers, are typically civilian models with only minor modifications for use by military engineers. See also Cranes.
Soldiers wearing gas masks work with a bulldozer to install a culvert, World War II, 1942.