U.S. Armed Forces Classes of Supply

• Class I - Subsistence (food), gratuitous (free) health and comfort items.
• Class II - 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, fuses, detonators, pyrotechnics, missiles, rockets, propellants, and associated items.
• Class VI - Personal demand items (such as health and hygiene products, soaps and toothpaste, writing material
  Writing material
  Writing material refers to the materials that provide the surfaces on which humans use writing instruments to inscribe writings. The same materials can also be used for symbolic or representational drawings. Building material on which writings or drawings are produced are not included...
  
  , snack food, beverages, cigarettes, batteries, alcohol
  Alcoholic beverage
  An alcoholic beverage is a drink containing ethanol, commonly known as alcohol. Alcoholic beverages are divided into three general classes: beers, wines, and spirits. They are legally consumed in most countries, and over 100 countries have laws regulating their production, sale, and consumption...
  
  , and cameras—nonmilitary sales items).
• Class VII - Major end items such as launchers, tanks, mobile machine shops, and vehicles.
• Class VIII - Medical material (equipment and consumables) including repair parts peculiar to medical equipment. (Class VIIIa – Medical consumable 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
  Repairable
  Repairable is a military logistics term for a hardware component of a weapons system that can be designated for repair.Repairable components tend to be more expensive than non-repairable components, known as consumables. This is because for items that are inexpensive to procure, it is often more...
  
   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.

North Atlantic Treaty Organization Classes of Supply

• Class I - Items of subsistence, e.g. food and forage, which are consumed by personnel or animals at an approximately uniform rate, irrespective of local changes in combat or terrain conditions.
• Class II - Supplies for which allowances are established by tables of organization and equipment, e.g. clothing, weapons, tools, spare parts, vehicles.
• Class III - Petroleum, oil and lubricants (POL) for all purposes, except for operating aircraft or for use in weapons such as flamethrowers, e.g. gasoline, fuel oil, greases, coal and coke. (Class IIIa - aviation fuel and lubricants)
• Class IV - Supplies for which initial issue allowances are not prescribed by approved issue tables. Normally includes fortification and construction materials, as well as additional quantities of items identical to those authorized for initial issue (Class II) such as additional vehicles.
• Class V - Ammunition, explosives, and chemical agents of all types.