I'm guessing 70 and 10 prestiges again. Not only that but I have reasoning, or at least this guy I'm bout to quote does, be warned there is math
All taken from the recent video
Originally posted by another user
corporal: 10,11
Master sgt: 24
1st Sgt: 25,26,27
2nd Lt: 35
In Cod4 the ranks are a little different:
Corporal: 7-9
Master Sgt: 19-21
1st Sgt: 22-24
2nd Lt: 25-27
This means that there would have to more levels per rank which would mean that there would have to be more than 55 levels.
I did the math and I got 70.
MATH:
I used master sgt.
19/24=.79
55/.79= about 70 (just under, but decimals under)
As for what the prestiges look like no clue, haven't been released yet except a proven fake