The Hammer of Dawn is an Imulsion-energized satellite particle-beam weapon capable of leveling buildings. It must be orbitally aligned overhead to fire. Your HQ contact lets you know when it is available. The Hammer requires a ground-based observer to acquire a target with a targeting laser. To do this, a Coalition soldier(Gear) must have line of site on the target and open sky. Press the left trigger to aim, then the right trigger to fire. Firing the hammer of dawn takes several seconds for the beams to align and fire, and if you are standing too close to the target, you risk becomming a casualty yourself.
The Hammer of Dawn is the only weapon in the COG aresenal that can defeat a Berserker. Once the Berserker's defences has been compromised with the Hammer, it can be attacked with conventional weapons for a short time.