Size of levies from cities and bishoprics

[Gandi]

Hey,

I read the guides about the topic but there is still one thing I can't understand: The levy size of cities and bishoprics seems to be always halved without an apparent reason.

Example:

I have a city (direct vassal) with 658 total levy size. I have instituted high crown authority, so cities should give me a minimum of 60% of their levies. 60% of 658 = 395. However I only get 202 levies from the city. The tooltip in the military view says: "Mayor Cormac could provide at most 335 troops. Of this you are able to raise 60% (202) due to crown law setting the minimum to 60%".

Of course, this explains where the 202 is coming from. But what decides about the amount of troops a city can provide? It seems to be always one half of the amount of troops a city has (no matter which laws are in effect or how the relation between liege and vassal is). Is there a reason behind this? Can this be influenced somehow?

 

[Yenzen]

Isn't this just the garrison being kept there? It's not like there are 0 troops left, even in your own baronies (where you raise 100%) after you raise the levy.

IE you're raising 60% of the levy but 0% of the garrison. Try raising the troops there and see how many % are left in the right bar (levy only)

 

[TheSupernatural]

As far as I know garrison and levy are separate. I'm pretty sure your vassals opinion of you affects how many you can raise as well.

 

[yezhanquan]

Vassal's opinion does matter greatly. Do not rely on CA to increase the size of your levies.

 

[Gandi]

Ok, to make things clearer: Start a new game as earl of Ulster using the Stamford Bridge scenario.

The city of Carrickfergus will have a garrison of 115 men and 111 levies.

The mayor of Carrickfergus has a opinion of -4 on me. This gives me an opinion percentage of 16.8% [ (25+(-4))*0.8=16,8 ]
This is modified by normal city levy law: Burgher Vassal Max Levy -35%

By multiplying both percentages we get a final modifier of 0.65*0.168 = 0.1092 = 10.92%

This is also shown in the military tab when I hover over the troops that I can raise from the city. This is the part I understand and that is explained in the guide.

Now to the part I don't understand:

The final modifier (10.9%) is NOT applied to the amount of levies available in the city (111). It is applied to 57 which is the amount of troops the mayor can provide at most according to the tooltip. 10.9% from 57 = 7 (rounded up). 7 is the number of troops I can raise from the city.

Ok, but why is the modifier applied to 57 instead of 111 (the actual amount of troops in the city)? There is no other liege involved other than myself.

57 of 111 is roughly one half of the total troops available. This is the same for the bishoprics. No matter how advanced the game is or what laws are in effect or how the opinion between liege and vassal may be it is always the same. Cities and Bishoprics always use roughly the 1/2 of the total troops available for the calculation. I wonder what the reason behind this may be.