the level is 65 you get m1a1 carabine and flamethrower
there is no highest level it goes on and on and on and on....
level 70...10th prestige
Beat campain every level and multi by reaching the highest level.
Level 70, Commander
Beat campain every level and multi by reaching the highest level.
There is no highest level on nazi zombies the amount of levels you can get to is unlimited
Call of Duty 4 Modern Warfare: Commander: Level 55 Call of Duty World at War: Commander: Level 65 Call of Duty Modern Warfare 2: Commander: Level 70 Call of Duty Black Ops: Commander: Level 50
by killing enemies, if your talking about online
2456 is the highest level reach so far but there are highest levels for all the maps
become a colonel which level i do not know.
Yes, the level is purely online it doesn't have to do with your save game.
Yes, you can level up online just like for the xbox 360, ps3 and computer. I know this for call of duty 4 and 5 for the wii but have never played call of duty 3 or prequals so don't know about them.