From the website:
The Military and Space Expansion for Dark Refuge the Adventure Game. This supplement has the rules for playing as a Soldier in the Earth Expeditionary Force, the defenders of the Colonies of Refuge. Expand your character by training with the Special Forces.
Learn to pilot one of the EEF Striders; Mecha that can make short work of a Tank. Defend the seas of Refuge in the EEF Navy, as the captain of a Submarine, Battleship or Airship. Dare the edges of Space with the Colonial Marines and the Project:Darkside Commandos.
Many new classes including the Power Armored Oni, and the Gunpod flying Valkyries. 30+ New Vehicles including Subs, Battleships, Airships, and Mecha. Multiple new starships, including starfighters, space transports and Capital Ships New Enemies including the stats for Iron Republic Brethren and the Iron Republic Fleet, the Space Pirates of Lost Hope space station, and the Sephir Mekanoid Empire.