Okay, so Carnell has 5 full-time guards/soldiers (including Brutus, Meridith, and Wieland). This doesn't include Sir Ghal, Sir Gareth, or Timmins. Right now, there are only 4 due to Raius's injury (w/poison) and him being taken to Fort Symas by Aeron. The other main guard is Ailward Stepney who is Sir Ghal's cohort.
The village's militia has 30 members (including Mabon) remaining after the attack from the rook-harpies. The bulk of these are either 1st-level warriors (14) or 1st-level fighters (9). There are also three 3rd-level warriors (including Elijah Wortham) and three 2nd-level fighters.
I've gone through and figured out all the various levels for the NPCs of Carnell, so if you want to have your PCs try to find help locally to fight against Tarrak's horde, you can make Knowledge (local) checks. Since they are new to the region, Angus and Maur have a -4 circumstance penalty to the roll. Caerth has a slight advantage since he's from Carnell, so the untrained roll gains a +4 luck bonus and he can gain more details about the information below with a roll above 15.
Caerth already knows there are other druids and rangers in the region, but he also knows they're not as skilled as him. All but one of them consider Aeron to be their mentor. The female half-elf druid, Syndra, rarely comes into the village. She is a lot older than Caerth.
Caerth also knows there aren't any barbarians or paladins living in or near Carnell, not even retired adventurers. He isn't aware of any bards, monks, or wizards in the village but such people have never been in his social circle (until he met Lorien and Phar). A childhood friend of his, Othrer, told him once that Lord Pendour had the ear of a strange sorcerer who lives under the stump of a giant tree somewhere in the wilderness. Of course, his half-orc friend was drunk at the time.
As far as Caerth knows, Sir Ghal is the strongest pure fighter in Carnell. Of course, Quinn is stronger than Sir Ghal. Most of the other fighters and warriors of the village are either past their prime (like Sir Gareth and Timmins) or really young (like Ailward and Brutus).
Like any community, Carnell has its thieves and outcasts but Caerth was told by Aeron to avoid them at all costs. The half-orc druid knows of the Brae Family who try to pass themselves off as rangers, but they act like rogues/thieves.