Recruitable generals

[homefry]

I want to be able to recruit my own generals. I've searched and found this....

For example, if you want the English to recruit generals, add the following line to a building of your chioce (play around with the numbers for different pool and resupply rate):
recruit_pool "NE Bodyguard" 1 0.7 1 0 requires factions { england, }


Because it says NE Bodyguard, does that mean every NE faction can recruit bodyguards?

Or is it only England because you specify England at the end?

Also, what do the numbers at the end mean?