davisp!
If you use an individual attack order that ghost that you want to carry out the order needs to see the target. When you use the team attack order the team member with the most suitable weapon will carry out the order. If he does not have a good position the ghost with the best position will attack the target. The team members will not attack vehicles if they do not have a suitable weapon. There can be obstructions that for the team members that may not be obvious for you as a player, so the attack order is very usefull when used in the tactical map and when you want to set a target