I agree with Velenne. But Tsu'koka would lobby for that, or some option other than leaving forces to defend the keep, if it comes to it. Leaving them would be a pointless slaughter (based on what the scouts saw - and reported back?)
Some options (to my not-particularly-military mind) would be to:
- Take them with us.
- Send them to the castle by a different route.
- Send them out to harry the elvan forces from the rear. (Even if they just keep killing the scouts and scirmishers it would help slow down the elves, i think.)
- Booby-trap the castle?
Or perhaps some combination of the above. Even if they were ordered to stay, if they had any sence, they would just high tail it out of there as soon as we were out of sight.