This term refers to vehicles that are used for the demolition of enemy fortifications, and the construction of defensive positions. In American English, the type of vehicle is called the Combat Engineer Vehicle, generally tank chassis with bull dozer blades and hydraulics added. In Japan, they try to avoid the term "combat" in their names, and tend to use civilian technology, instead of adapt military vehicles for use.

What you want to be careful with, is the specific terminology. A more general term is "Military Engineering Vehicle". "Combat Engineer Vehicle" is used by the United States Armed forces. Many armies have very particular names for their equipment. For instance, the Grizzly based on the M1 tank is called a "Combat Mobility Vehicle" because it is meant to be a primarily offensive tool, used to clear areas for other tanks to travel through. I could go on, but the CEV is a well understood term in the US military. The British use the Chieftain Armoured Vehicle Royal Engineer, or the ChAVRE. Different terminology. I hope this makes sense.