Two regiments...
Renart studied the composure of the men who served under him and decided that two regiments were enough. He wouldn't press his vassals for more, given their unwilling stupidity attitude. The people, were a more important factor.
While away, Renart entrusts the commonfolk [In secret] to keep Northwatch stable and not in the hands of those lesser lords. As well as keeping that Haegar ex-warchief safe, and the rest of the populace. Do not bring the Infantry Regiment loyal to my name that is guarding the Trade Route.
"Captain, ensure the levies are taken well cared off. We'd not like to lose our hunters ere the Winter falls. Make haste, we move for Dechire."
Move onto Dechire! Perhaps, raise any...more levies if possible?
Dechire: Ascertain their allegiance to Richard through finding out who currently is in charge. Hold a meeting with them and try to sway him/her over if not -- remind them of Richard's ancestry and of how he served loyally along with Albert. If successful, raise levies from there, as well as the past Duc's forces still loyal to him (for the glory of the realm) and march onwards to Richard's location, aiming to evade any enemies on the way if possible.
If they still resist, attempt to take the City by force and only the city -- not directly:
Attempt to Reveal and locations from ambush before the fight. Whichever goes, ensure that at least some portion of my troops are in the city before we make our attempt at taking it.
If Dechire is under control, request if I could gain ducats -- in the name of the protection of the realm, of course this is optional and for those who wish to contribute.