casualties recovery

[Swordmaster]

Thanks for the answers guys. However now I'm more confused that before!
According to konny: Isn't this weird and contradictory to common sense?

Medical Toaster: Does this mean the first couple of units or the first X(for example 60) soldiers of any unit? This may explain the incident I mentioned in the first post.

Looking at the screenshots of six battle reports under the same commander, I get the idea that it's the first 15% casualties of the battle that are healed. I'll continue investigating this as I change commandership of my army.