Which organization determines eligibility for ACS services in overseas commands?

The commander of the military unit is responsible for determining eligibility for Army Community Service (ACS) programs in overseas commands. This is because the commander has a direct understanding of the specific needs and circumstances of their personnel and their families. They assess the unique situations that may arise in overseas locations, considering factors such as the size of the unit, the types of missions being conducted, and the demographics of service members and their families.

In this context, the commander's role is crucial since they can establish local policies and guidelines to effectively deliver and manage ACS resources. Their leadership ensures that the programs align with the Army's overall objectives while also being tailored to fit the community's needs.

The other options, while involved in broader policy or community support functions, do not have the same level of direct oversight and individualized understanding of unit personnel matters as the unit commander does.