pretty simple one really. i know you can only block your opponents enemies with a special skill, but can you choose to attack your opponents enemies in your turn to help them out?
can you attack another players opponent in your turn?
What game are you talking about? You are probably better off going to the forum for that specific game and asking in the rules board there.
Sounds like lord of the rings. There is a special skill for attacking opponents engaged enemies called Ranged, see rulebook pg 24 bottom.
Except in LotR you don't have any opponents. I thought he may have been talking about AGoT melee.