Which class of supplies is most closely related to operational readiness?

Operational readiness is closely associated with Class III supplies, which primarily consist of petroleum, oils, and lubricants (POL) required for the functioning of military vehicles and equipment. These supplies are essential for maintaining the operational capacity of military forces—ensuring that equipment remains fueled and can perform its tasks effectively. Without adequate Class III supplies, units cannot sustain operations, thereby reducing their combat effectiveness and overall readiness.

Class II supplies include clothing and individual equipment, Class V supplies pertain to ammunition, and Class VII supplies consist of major end items such as tanks and vehicles. While all these classes contribute to overall operational capability in different ways, Class III is crucial because it directly affects the operational tempo and the ability to conduct missions effectively. The emphasis on fuel and maintenance fluids highlights their importance to combat readiness, thus linking Class III supplies closely to the concept of operational readiness.