Disbanding units and recruitment pool

[rebelyell2006]

I just noticed that if I disband a unit, it gets added back to the recruitment pool for the nearest settlement. Is this hard-coded, or can it be prevented?

EDIT:
Screenshot below. The recruitment pool for all ships is 3 maximum. I had a fleet of 4 dragon boats and 12 longboats that I disbanded to make room for carracks in my home fleet, and those 16 ships returned to my recruitment pools.

[Ishan]

Yes that's the whole point of disband function so that you can recall the units if in peril. No it's hard-coded.