Commissary (noun)

1. A store or shop, especially one selling food and supplies, operated by an organization such as a military unit or prison.
2. A person appointed to manage the provision of supplies.

Origin:

Late 16th century: from french commissaire, from latin commissarius "deputy", from commissus "entrusted", past participle of committere.

Examples:

1. The soldiers had to go to the commissary to buy groceries.
2. The prisoners were allowed to shop at the commissary once a week.
3. The commissary manager was responsible for ordering and stocking the store's goods.
4. The commissary was closed due to the storm and the soldiers had to make do with the rations they had.
5. The company hired a commissary to manage the logistics of the event.