(2) Professional units in the Corps of Engineers that undertake field engineering support tasks. Equipped with field engineering machinery, mine warfare equipment, anti-mine warfare equipment, blasting equipment, bridge crossing equipment, urban construction equipment, etc. Mainly responsible for engineering reconnaissance, building and maintaining command posts, building field fortifications, building roads and bridges, opening up ferry yards, building, setting up and removing obstacles, and carrying out sabotage actions.

Services or professional soldiers who undertake engineering support tasks.

Army engineers are usually composed of engineers, pontoons, camouflage, construction, engineering maintenance, water supply engineering and other professional units.

Some countries also have specialized units and detachments in engineering reconnaissance, road engineering, position engineering, bridges, landing crossing rivers, engineering obstacles, nuclear mines, mine clearance, assault, surveying and mapping, machinery and so on.

The main tasks are engineering reconnaissance, fortifications, roads, bridges, ferry yards, obstacles, sabotage, field water supply stations and engineering camouflage.

Other services also have special engineering units, which are mainly responsible for the construction tasks of airports, military ports and missile bases.

The China People's Liberation Army Corps of Engineers was born in 1927 during the Nanchang Uprising on August 1st, while the China People's Liberation Army Corps of Engineers was founded in 1950 in February and renamed as Corps of Engineers in August.