Wrt the anon’s Duskendale question – they specifically mention ‘Tywin [besieging] Duskendale’, so I think they’re probably talking about the Defiance (which Tarly is never mentioned as having been involved in, I think), not the Wot5K’s Battle at Duskendale (in which Tarly had the command).

Ah. Well, the WOIAF says that:

“Lord Tywin thus sent out riders and ravens, gathering forces…Lord Tywin would not chance it. Instead, with a sizable host, he moved to surround Duskendale, blockading it by land and by sea.”

We know that the Kingsguard were there, the fact that Duskendale was blockaded by sea means that the Royal Navy was there, but the fact that Tywin used both short- and long-ranged communications suggests that he went beyond the king’s own bannermen, and probably called up his own Westermen (if you’re going to put Duskendale to the sword, relying on Crownlanders to do it is potentially dangerous), maybe some Riverlanders given the regional proximity.