The Allies have developed the Ore Purifier as a way to further refine the ore they mine. While an expensive structure, the Ore Purifier allows you to gain additional credits from every load of ore you Miners return to your Refineries. Over time, the Ore Purifier pays for itself many times over. The Allied army depends on superior information to defeat the Soviet menace. When built, the Spy Satellitie Uplink completely removes the shroud, showing all location on the battlefield and on the Radar display.
Walls are a passive defence system designed to stop enemy infantry and vehicles.
Multiple pieces of wall section can be placed at once for quick building. Pill-boxes are fortified gun emplacements designed to protect an area against attacks by enemy infantry. Pill-boxes are not very effective against vehicles. They cannot shoot through walls, either. The Prism Tower is a powerful base defence for the Allies.