I've never used healers much even though I am now TH10. During my last war attack I use the 2 archer 1 healer strategy to lock down the cc def lava hound. The only problem was that instead of dropping 2 archers consecutively, I dropped archer, then healer, then the 2nd archer. The healer proceeded to just float there the entire time and didn't heal the archers even though the cc def lava started killing them.
Does the healer AI logic have a minimum troop space required before being activated? I don't want to make the same mistake again. Any input will be greatly appreciated. Thanks!

