A lot of those barons have connections at court, or are acting as agents for others. There are also some rather wealthy barons who are able to maintain a few dozen armed men.
Not usually. Levies are maintained the same way large estates are, with serfs directly overseen by freeholder factotums, who may, in turn, be overseen by untitled or minor banebloods working for a major lord.
Pretty much. This was also heavily exacerbated by the fact that most of these regiments weren’t homogenous forces, but a patchwork of private armies with their own traditions, procedures, and idiosyncrasies.
Wulfram was there at Noringia. He was, in fact, one of the first senior officers through the breach. Myopic and pig-headed he might have been, but nobody could doubt Wulfram’s bravery.
It really depended on the sergeant. Early in the war, there were more than enough willing volunteers. As the war progressed, recruiting parties started indulging in some shady practises. By the time conscription was authorised, they’d often just march into town and kidnap anyone who didn’t look like they’d be missed.