Feel free to post what your characters are doing for the next 1-2 minutes of fight. No need to go "by round" as this is mainly a narrative battle. The actual soldiers will ignore those they consider refugees (Kimber, gnomes) unless they draw blood. The half-orcs and human bandits will target those they consider weak (Kimber, gnomes) first though!
Be mindful of your power-level in the descriptions please

; A 1st lvl character killing 4 enemies without a scratch is a stretch. You can get wounded freely if you want. There will be a long rest before we go to the actual adventure.
The cannons will fire once more during this period; they will miss the first wagon but the ricocheting cannonballs would claim some blood. After that, the fog will neutralize the cannons that the royalists put so much effort to haul there.
A few clarifications:
- There are 3-4 royalists coming from the front of the map I posted.
- The mists aren't too thick yet, but they're getting thicker. Consider in those 1-2 mins that beyond 200' ranged attacks and perception checks are with disadvantage and things are lightly obscured. Beyond 400', everything is heavily obscured (hence the cannons won't be able to shoot again).
- There are 5-6 royalist soldiers, that are good and experienced warriors. The rest are irregulars of low threat. The majority of the surviving rebel guards are better warriors than the irregulars and worse than the soldiers. The refugees that put up a fight are very weak; 3-4 of them can barely win a half-orc bandit.
- There's a dwarf cleric in the caravan, Burdur, that I didn't have the opportunity to introduce. He hasn't try to make many acquaintances, he's 4' tall, stocky, with dark brown hair and beard. He doesn't seem to hold much respect for anything that's not dwarven.
The map is not precise! That a squad starts around where I put it, doesn't mean they will stay there. Also, there are panicked refugees running all over the place.