you have to gain 70 experience points, thus resulting in officer or lieutenant as it's called.
just look up halo 3 ranks on google
My Friend Came Across That But When He Got To Lieutenant In The New Halo Ranking System (The White Rank Icon NOT THE NUMBER) He Then Got Lightswich 0g and Spartan Officer 25g And The Rouge Helmet
The best place to get your Halo 3 Ranking not only for your state and country but the World is Halocharts.com There you will find all your Ranking for Every Weapon Every kill and so on!
you need to have 100 exp and 10 skill level to become a lieutennant (officer) on halo 3
I believe Lieutenant.
General grade four
50exp
Warrant Officer Grade 3
haw to make mode maps in halo 3
Ann Rondeau 3***Admiral
i am VERY sorry to inform you of this, but you cant. in halo 3, halo reach, and halo 3: complete multiplayer experience you can.
You cant. That was removed in the transition from Halo 2 to Halo 3. Bummer huh