During the post-war crisis, amidst the ruins of the glassed Misriah HQ on Mars, lay prototypes for numerous weapons and the design blueprints for the XH-55 Rifle. This rifle was designed to serve humanity in a post-apocalyptic situation, after the eventual glassing of Earth. Designed by ORION II's Aggressive Task Force (Division ONE), by Jack Rosevelt, Adam Breton and Alicia Ackerson during 2551, the rifle would not go into production until the year 2598.