How exactly do I flank?

[Fluffle]

Hey guys,

 

in what cases does an enemy count as being flanked?

 

I'm interested in that for using my rogue with sneak attack on flanked enemies.

 

Is an enemy being flanked when he is attacked by one character from front and one additional character from the side and/or behind?

Is the Rogue the one doing the flanking, or can someone else do it?

How exactly does flanking work with a Ranger + animal companion?

 

 

[Billy O]

No idea, I would like to see this answered as well. Also for backstabs.