Rank (Halo: Reach)

The Ranking System in Halo: Reach is based on Credits (cR) earned through Forge, Multiplayer, Campaign, and Firefight matches. Credits are earned after every game, and you earn extra Credits for medals earned during the match, (e.g. Double Kills) victory bonuses, Commendations, and Daily/Weekly challenges.

Credits earned towards your rank and can be used to purchase various armor permutations from The Armory. When ranking up, you will be able to see items that you can't yet purchase, these are pieces you can purchase in a few ranks. Note that Credits spent on armory purchases do not decrease your rank. However, Credits earned from any other feature (Forge and Custom Games) are significantly lower than those awarded for playing multiplayer via Xbox Live or Campaign for online accounts only. However, any account that has never been connected to Xbox LIVE will not have a decrease in the amount of Credits obtained for each gametype played.

Trivia

 * The ranks after Lt. Colonel, Grade 3 have not been confirmed or denied by Bungie, as they will be officially released after the Halo Reach community reaches a total of 117 million Daily and Weekly challenges completed. Bungie's online engineers have predicted that this community challenge will be completed sometime in late October/Early November.
 * Bungie confirms Haunted Helmet is only available to select Bungie Employees.
 * Players who reach the rank of Lt. Colonel, Grade 3 will no longer rank up but will continue to earn cR. When the level cap is lifted, players who have earned enough cR for a promotion will be promoted to the appropriate rank.