Bunker with division inside.

[PlasmaKrab]

Are you talking about armed bunkers? Like the ones with guns and MGs?
You can give a carry capacity to bunkers just like transports, and there are things called "shelter bunkers" that serve just to hide troops (like HQ units). Look at units #205 and #206 in the Russian OOB.

Also, now that I look it up, all of the "Earthen Bunker" (with MGs) and "Concrete Bunker" (with antitank guns) units can already carry some troops.

[Epoletov_SPR]

I want that armies could be hidden and get out from Bunker during fight.
It is possible even without opportunity to fire.