Fortified Units - no CPP?

[Hardradi]

Playing in a Server game I have noticed that my fortified units dont seem to gain CPP.

I know a lot of fort units were traditionally older, infirm and/or troops from captured regions but I would have thought these deficiencies would be modelled through Morale and Experience.

Is this because they are static?

[AlbertN]

They are static thus get 0 SMP and it's SMP that goes into CCP!

[Stamb]

Then there must be an exception for fortified/static units

[loki100]

as above, CPP gain is keyed off SMP, there are special rules for formations inside city forts (since these too lack SMP) but FZ are of virtually no practical combat value

[Hardradi]

Also Support Units attached to Fortified Units do not appear to gain CPP.