Your Armor: Human soldiers have used performance-enhancing equipment for hundreds of years, and your MJOLNIR battle suit represents the current pinnacle of military technology. As a product of the SPARTANN-II project where you were bio-engineered and technologically enhanced for better reflexes, eyesight and coordination; the addition of your MJOLNIR armor makes you nearly invincible.

The battle suit utilizes a neural interface implanted in your brain. Your armor's movements and weapons are controlled at the speed of your thoughts. The battle suit also contains a layer of crystal that forms a network capable of supporting starship-grade AI so you can overpower alien computer systems if necessary. The suit's shell is comprised of many layers of strong alloy, and a refractive coating to disperse energy weapon hits. Internally, the suit regulates temperature and can reactively change in density if necessary.

The Marines on the Pillar of Autumn are a rugged and diverse assortment of soldiers, fighting a losing battle against the Covenant's superior weaponry and numbers. Under the leadership of Captain Keyes they wage a furious struggle against the Covenant. They're the best of the best. But they're only human.