It is the former Regional Command South of the International Security Assistance Force ( ISAF ) .
Train Advise Assist Command -- South ( TAAC -- South ) is a multinational military formation , part of NATO 's Resolute Support Mission within Afghanistan .
It is the former TAAC     of the International Security Assistance Force ( ISAF ) .
Train Advise Assist Command -- South ( TAAC -- South ) is a multinational military formation , part of NATO 's Resolute Support Mission within Afghanistan .