Which division is known for managing and providing service to both resale and operational supplies?

The division responsible for managing and providing service to both resale and operational supplies is known as S-4. This division typically handles logistics related to supply procurement, including purchasing, inventory management, and distribution for both resale items and operational support.

Understanding the role of each division is essential in supply chain management. The S-4 division specifically focuses on maintaining the flow of goods and ensuring that supplies are available for operational needs as well as for resale purposes. This is vital for the efficiency of logistical operations, as it ensures that both front-line and support personnel have access to the necessary materials to perform their duties effectively.

Other divisions, such as S-2 and S-3, may focus on different aspects of logistics or operations, but they do not primarily manage the supply of resale and operational items, which clarifies why S-4 is the correct choice here.