Board Thread:General Discussion/@comment-26257239-20150513040751/@comment-24739965-20150513042655

Only some enemies, mostly aces in AC5 such as Zipang uses countermeasures. I believe this ace (Replicator) also uses countermeasures though I'm not 100% sure on that.

Enemies with countermeasures can be shot down with missiles. It needs some skill to do so.

The player can not uses flares in game, except in Assault Horizon.