Spartan Ranks or SR for short, are the ranks used in Halo 4's competitive multiplayer. Every player starts out as a recruit at SR-1, and eventually reaches SR-50, where a Specialization must be chosen. This Specialization will last that player 10 ranks, then another can be chosen. With a total of eight Specializations, the Spartan Rank capacity in Halo 4 is SR-130.