When I played Breath of Fire II back in the days, I noticed that there was a village where fights were a bit different. There you had to rescue the villagers by not killing them but just the scorpions that controlled them. You were still able to kill the people but it was not recommended.
This scriptlet would let the battle script judge the end result of the battle without any external interference. This means that you will not be in a dire need to keep checking your enemies' current HP every single turn via event commands!