Whats up with the mix-matched armor sets in Halo 4? One is olive drab metallic armor with a face mask, another is mostly white and appears to be made out of more fabric like material and the other one is the same thing as the white except for the fact that it is black? (ODST's Maybe)
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The [i]Infinity[/i] is the flagship of the UNSC Fleet. I think it stands to reason that there are officers and non-officers of every major branch of the Military aboard. Air Force - Pilots. maybe? (Granted we see no Hawks or Hornets, just Pelicans, and you could easily have Marine pilots) Marines - Obviously infantry. Army - Not every soldier is cut out to be a Marine, but they should still have combat experience with the Covenant/ Prometheans. Navy - It's a ship. It's manned by Navy personnel. Spartans seem to be their own division of the Military now. Kind of odd that ONI would relinquish command of the UNSC's most important program.