Why can't I recruit professional soldiers?

[J-Plague]

I'm new to this mod so just wondering, so my castle says 5 turns till I can recruit armoured sergeants and 3 turns till I can recruit sergeants. OK, but 20 turns later it says the same thing, in all of my castles. Am I doing something wrong? How can I recruit new soldiers?
I also can't recruit urban professional soldiers or seige units, but I can still recruit militias in all my castles and cities.

[django333]

Are you using BYG's and RR? If so, check out their threads in the sub-mods forum.

[Viscule]

I'm new to this mod so just wondering, so my castle says 5 turns till I can recruit armoured sergeants and 3 turns till I can recruit sergeants. OK, but 20 turns later it says the same thing, in all of my castles. Am I doing something wrong? How can I recruit new soldiers?
I also can't recruit urban professional soldiers or seige units, but I can still recruit militias in all my castles and cities.

Has to do with one of the sub-mods you are using. Read up on them.

Most likely BYGIII or RR/RC.

[Caesar Clivus]

As has been said, this is due to submods you have installed. This has been asked and answered many, many, many times. Please use the search function before posting.