I recently had a session where the party was on board a boat (Smugglers) with a crew size of 40 which got into a fight with a boat (Royal Marines) with a crew size of 60.
Obviously I didn't put the whole crew into combat, I limited it to 10 Smugglers and 10 Marines (plus the captain of each boat).
Including the party, this meant there were 26 people on the initiative sheet, 22 of which were NPCs under my control fighting against each other. This meant that most of the fight was spent with the party watching me playing with myself.
Obviously this is unacceptable.
What would be a better way to deal with this? My job is to make the players have fun and not sitting around bored while I figuratively jerk off, but I also want to impress upon them the scale of a large battle.
I am willing to accept any and all suggestions, no matter how crazy (including incorporating other game systems).