Logistics Basic Officer Leader Course (LOG BOLC) Exam 3 Practice

In this system, Class IV covers construction materials used to build and repair facilities, roads, airfields, fortifications, and other infrastructure in the field. That makes construction materials the primary use. Medical materiel falls under Class VIII, ammunition under Class V, and rations under Class I, so they serve different needs and are grouped separately. In practice, engineers rely on Class IV for items like lumber, cement, bricks, hardware, and other building supplies to enable construction and improvements in the operational environment.