Combat engineers construct, alter, repair, and maintain buildings and structures; lift and move heavy objects and equipment by setting up, bracing, and utilizing rigging devices and equipment; and perform various duties incidental to the use of demolitions in construction projects and destruction of objects. Personnel assigned this MOS are taught carpentry and other construction skills as well as demolitions, specialized demolitions for urban breaching and land mine warfare.

The cannon crewmember supervises or serves as a member of field artillery cannon section or ammunition section.

Combat engineers supervise, or serve, as a member of a team, squad, section, or platoon. They are engaged in providing mobility, counter-mobility and survivability support to combat forces.

The infantryman supervises, leads, or serves as a member of an infantry activity that employs individual small arms weapons or heavy anti-armor crew served weapons, either vehicle or dismounted in support of offensive and defensive combat operations.

The indirect fire infantryman serves as a supervisor or as a member of a mortar squad, section, or platoon. Employs crew and individual weapons in offensive, defensive and retrograde ground combat tactical operations.

The cavalry scout leads, serves, or assists as a member of scout crew, squad, section, or platoon in reconnaissance, security, cordon/search, and other combat operations.

The M1 armor crewman leads, supervises, or serves as a member of M1 armor unit in offensive and defensive combat operations. In addition, serves or assists on staffs at battalion or higher level.