As a matter of fact, four realms can.
If you factor in militia maybe, but they shouldn't count for a number of reasons. They're not usually all in one place, for one thing. Neither can they move around to respond to daimon incursions. The daimon armies are mobile and concentrated. I would be impressed by any realm that could put 25kCS in one region. Thalmarkin managed 17kCS in their capital for the first battle, and they have probably the biggest mobile army and one of the richer capitals. Do you really think they could have pushed that up by another 8k CS?
Militia cannot be concentrated in one place the way mobile forces can (unless they're all in one region to begin with). Even in the capitals they're almost worse than useless anyway given the daimon ability to charge the walls over and over again; logic dictates you start all your forces in the rear to make sure the melee doesn't happen where the daimons can be thrown off the walls. With militia I'm not sure if this possible to accomplish since they always start in the middle.
