The first halo game that belongs in the story line is Halo wars, Halo ODST, Halo Reach, Halo CE, Halo 2, Halo finish the fight, and then Halo 4; I don't know if there'll be another Halo
I CAN TELL YOU ALL OF THE REACH RANKS IN ORDER: Recruit, Private, Corporal, Sergeant, Warrant Officer, Captain, Major, Lt.Colonel, Commander, Colonel, Brigadier, General, Field Marshall, Hero, Legend, Mythic, Noble, Eclipse, Nova, Forerunner, Reclaimer, and INHERITOR!
[Edited on 06.28.2011 4:39 PM PDT]