The horizontal construction engineer supervises or serves as a member of a team, squad, section, or platoon. They are responsible for, quarry, paving, and plant equipment operations, and crew maintenance of equipment.

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.