People have said at the rank of Commander or Brigadier. But what they all agree on is that it costs 300,000 credits.
Captain
Commander
By getting to Leiutenant Colonel rank you unlock the CQC shouloders to buy in the Armory.
The highest rank in Halo: Reach is Inheritor.
The highest rank you can reach is 46.
You unlock the Grenadier Shoulders at the rank of Colonel, they cost 65,000 cR.
Captain
Commander
You have to be the last rank and 100% Armor completion
Do a bulltrue in matchmaking to unlock the avatar award.
major with 140,000 points
You have to be an warrant officer in halo reach to unlock the helmet you also have to go to halowaypoint and unlock the armor.
It is unlocked at the rank of Colonel on Halo: Reach and costs 1,200 CR
Simple: you must be rank commander or higher. Emiles helmet is a helmet of its own.
commander wich is after lt.colonel grade 3
You have to be a general, and you can only get the knife on the right shoulder
get to lieutenant corporal rank and bu it in the armory