The Oil derrick serves as the resource point for the Act of War series. They are built over oil deposits where oil can be collected by tankers, this oil is them transported to a refinery where it is turned into money. Each of the factions has its own unique upgrade for the Derrick.
Oil vein nano-saturation Once upgraded, if an enemy destroys and then builds his own derrick, the area can be detonated to do damage to all surrounding units and structures, must be individually upgraded. Task Force Talon and High Treason only.
Deep forage technology The maximum oil capacity of the derrick is increased by 20%, must be individually upgraded. U.S. Army only.