You become a Captain by ranking up in ranked matches to a certain level and also having a certain amount of EXP, sorry but i cannot remember what the exact numbers are.
After the rank captain and captain grades 1, 2 and 3 is Major
After the rank captain and captain grades 1, 2 and 3 is Major
You have to work for bungie, the makers of halo 3. Bungie.net
Warrant Officer Grade 3
you need to have 100 exp and 10 skill level to become a lieutennant (officer) on halo 3
No but he is along by your side throughout the game
2xp
you unlcok captain dare the woman with recon helmet
It depends on how much you play it.
The idea for Halo Reach was made by a group of Bungie members who had helped on Halo 3 and ODST while secretly working on what would eventually become Halo Reach.
recon will become regularly available after halo 3: ODST comes out in september. You can obtain it by completing all the vidmaster challenge achievements.
you need to be the rank of captain