Bat Swarm

An enemy unit in base contact with Bat Swarms has the Always Strikes Last special rule

.

ERRATA
Free Reform.
Change “[...]move, provided[...]” to “[...]move, even if it
marches, provided[...]”. Change “[...]double its Move value.”
to “[...]double its Movement value.”

Light Troops.
Change “[...]zero ranks[...]” to “[...]zero ranks in
combat[...]”.

Fear, cannot march, Unstable.