Im just stating the truth, i've been playing this game since v5
The game is currently V 11
you have to set beds or armour stands up in the area you want to be the barracks and assign them as such and also you can assign squads to train at those places
crossbows are broken as forget in the new version though so dont bother
Half my fortress (except nobles) Have to sleep in the barracks :D
Nobles have their own rooms
Also, what are you talking about glitched crossbows?
That's what i used to take down the forgotten beast
Proof of forgotten kill:

Apparently my forgotten beast has 14 brains