When does an enemy counterattack, and who does it hit?

Question

Accepted Answer

After your attack, a surviving enemy group counterattacks only the hero who attacked, and only if that hero is in its range. A ranged attack from an adjacent space is usually safe unless the enemy has range too. Other heroes in the space are never targeted. If the group is not in range, select No.

The Lord of the Rings: Journeys in Middle-earth

When does an enemy counterattack, and who does it hit?