From the U.S. Army Field Manual 4-0 Combat Service Support, I present:
U.S. Armed Forces Classes of Supply
Class I - Subsistence (food), gratuitous (free) health and comfort items.
Class II - Clothing, individual equipment, tentage, organizational tool sets and kits, hand tools, unclassified maps, administrative and housekeeping supplies and equipment.
Class III - Petroleum, Oil and Lubricants (POL) (package and bulk): Petroleum, fuels, lubricants, hydraulic and insulating oils, preservatives, liquids and gases, bulk chemical products, coolants, deicer and antifreeze compounds, components, and additives of petroleum and chemical products, and coal.
Class IV - Construction materials, including installed equipment and all fortification and barrier materials.
Class V - Ammunition of all types, bombs, explosives, mines, fuzes, detonators, pyrotechnics, missiles, rockets, propellants, and associated items.
Class VI - Personal demand items (such as health and hygiene products, soaps and toothpaste, writing material, snack food, beverages, cigarettes, batteries, alcohol, and cameras—nonmilitary sales items).
Class VII - Major end items such as launchers, tanks, mobile machine shops, and vehicles.
Class VIII - Medical materiel (equipment and consummables) including repair parts peculiar to medical equipment. ( Class VIIIa – Medical consummable supplies not including blood & blood products; Class VIIIb – Blood & blood components (whole blood, platelets, plasma, packed red cells, etc).
Class IX - Repair parts and components to include kits, assemblies, and subassemblies (repairable or non repairable) required for maintenance support of all equipment.
Class X - Material to support nonmilitary programs such as agriculture and economic development (not included in Classes I through IX).
Miscellaneous - Water, salvage, and captured material.