It have been mentioned in the discord, armies in CK3 will not have morale like in other paradox games and from what you can read from the warfare DD, battles will last to all Soldiers on one side have been killed or routed. For some reason this don't seems to be mentioned in the faq.
So what do you think about this change?
Soldiers on the combat line damage the enemy on every tick. When a soldier “dies”, he will be considered to be either a Casualty, or to be Routed. Casualties, you guessed it, are considered dead and will have to be replenished over time. Routed soldiers, on the other hand, are troops that are injured or fled the battle and are added back to the army once the battle is resolved. Battles are resolved once either side runs out of fighting troops.
So what do you think about this change?