How to make neutral units deffend themselves?

[chnapo]

So my idea is that in a conflict between blue and red, there is a third party, let´s say insurgents who are holding certain positions and are trying to fight both parties. I managed to get neutral units by first assigning a desired country to either alliance and then make it neutral again, but now the units are just passively getting destroyed. Planes will take off but will not fight, AAA and SAMs will not shoot etc. Is there any way to add working, aggressive "third party" into the mission?

[Lawndart99]

Only way i have found is to have them "attack" which takes away from the defend aspect