The Refill & Maintenance Couriers were the field spine of the Frontier Supply Company during the Beta Age. Riding sturdy Hoos across the Free State of Settlers, they restocked the Frontier Quickdraw Network’s purely mechanical vending machines, fine‑tuned springs and chutes on-site, logged sales and jams in grease-stained ledgers, and hauled back empty refill crates.

When Communardist nationalisation followed the 2631 Peace Treaty, most were folded (grudgingly or pragmatically) into the Federal Allotment Agency’s distribution corps or reassigned as riders in the Federal Courier Service.