The hell with this send some more scouting missions and find the remainer. Also see if we can find gorgals banner and concentrate the attack their. If we can take him out I'm sure it'll be the finishing blow to the sea raider invasion.
Several scenarios for the absent troops.
1. There may not be a cohesive remainder for our scouts to find, just hundreds of small deserter bands dispersed everywhere. Too many to really pinpoint.
2. There are four distinct tribes, and one or more may have deserted in entirety. Those are cohesive enough that they can be pinpointed by scouting eventually, but if they are randomly marauding far away, it makes no difference to us in the coming battle. Gergal cannot or will not call them back to his aid. Even if they do show up, I'm confident of the shock that the trenches provide. Those trenches can kill a lot of people, and rout the rest entirely! A trench that is 1km long, 3m wide and 3m deep can theoretically hold the volume of 30,000 average male bodies!
3. Then it's possible that Gergal still commands the absent men, ordering a purposeful flanking attempt. I really don't think he'd respect us enough to trouble himself that much when he could crush us with a massed attack over apparently open ground. Flanking requires careful timing, else being defeated in detail, and is not always the brilliant plan that it seems... still, scouts can sweep through other routes around us. I'd rather not send our actual rangers though, since they're proficient in archery, and the coming battle will be all about raining a lot of arrows down on enemies reeling from our trap.
The Chevauchee is exactly what defines light horse: their main use is to deny the enemy from its own resources, including his own supply and most importantly space. Its almost defenseless against a proper army except a great escape.
It's true that they were doing what light horse often does; but they were knights in heavy mail, and you'd classify them as heavy horse based on appearance. I'm not saying that we do a chevauchee, which makes no sense in this situation, merely that heavy cavalry can be quick and agile in comparison to infantry. That's all.
If we wanted to strike quickly at a specific part of their siege lines, we could do that with heavy horse. Cavalry does not need to get into a orderly formation--unlike an infantry shieldwall or pikewall--and that means that cavalry deploys into an attacking stance extremely fast on a battlefield. There's no reason the heavy cavalry can't raid quickly into the camps where the Gergal banners are before other enemy infantry can react. More glory, quicker results, no trap in needing of drawing them in, but more deaths among knights and nobles. I don't support this, but it's there on the table.
It may be cowardly but I still suggest starving them out. Anyway going in a beeline towards Gorgal's banner would be directly running into a trap.
Wanting to do it all by starvation alone, by doing raids on their foraging, might eventually move them toward our hill when they learn that it's the camp from which we launch the incursions. But when does enough become enough? The timing is their discretion, and they may approach cautiously expecting our camp to be well defended, while also reuniting some other wandering bands; whereas when they react to a fake rout, they will be impetuous and not suspecting that we prepared the area for them--else why would we leave it after preparing it? It simply looks like they cornered us, and we sought a slight hill to make our last stand. The traps will hit them all the harder then, when they expect an easy killing blow.
On the other hand, if they wait too long to answer the raids, then they are that much more weakened by starvation. I still would rather do a fake rout, though.
I see four possibilities discussed so far:
1. Fake rout -- me, lurker
2. Starvation -- evilcherry
3. Charge into the siege lines. -- 3man?
4. Diplomacy -- no one