[Trigger] How to change player alliances before units attacking each other?

[Barade]

Hi,
another very simple question. In my map, I have players who should ally Neutral Hostile. I cannot configure that in the map's player settings, so I use triggers to change the alliances. Even when I change the alliances during the map initialization or of course after 0 seconds have passed, units next to each other are still attacking (from the initial attack order).
How can I prevent that and change the alliances in a way, they won't attack initially? I do not want to order all of them to stop once which would waste performance.

 

[Footman16]

Pause all units at start - change alliance - unpause all units?

 

[Pyrogasm]

After you change all the alliances, order every unit on the map to "stop".

 

[Barade]

Okay I wanted to avoid both but if there is no other way then ...

 

[Pyrogasm]

You could try to reissue the previous order if there was one, or try to initialize an AI after this occurs so that its orders don't get messed up.