Resources are essential needs for a base in Halo Wars. They are required to build units, buildings, turrets, and research upgrades; they can also be used to power many special attacks and weapons. Resources can also be obtained from the base Supply Pads, or by scavenging them in the field.
Resources can be discovered in the form of supplies that have been dropped on the battlefield or left from a previous engagement. These supplies can be collected by selecting an infantry unit, scout unit or Sergeant John Forge. They are collected at an increased rate by leaders. Building supply pads or warehouses are another way to begin receiving resources on the player's base. Upgrading these structures to a Heavy Supply Pad or a Blessed Warehouse doubles the rate at which resources are gathered.