Can Someone help me out? AoS triggers

I'm new to map making and am trying to make a trigger similar to the one in Spellcraft, where in strife mode the good units go from the barracks to a stopping point and then go to attack the other side of the map. Can someone tell me how I would do that. I have been playing with spawning and making the units "auto" attack towards a direction, but I am having trouble figureing it out or finding a map that I can look at the triggers for help.

Any help would be appreciated very much and thanks in advance for any help with the tricks of the trade.


EDIT: I guess I should specify what I am trying to do with my map. Basically you are a one of several heros each player trying to survive the longest. I want to spawn units and have them move around the map to specific points on the map on attack "mode" so that if they run into one of our unsuspecting heros, they attack them. I want to make the spawned units to move as soon as they are spawned from their barracks and to move in attack mode to a pre designated spot, pausing only to turn and go to another pre designated spot. there are three spots that I want the spawned units to follow in attack mode then I have them walk off the map and "die". The idea is there, but my knowledge of map making is not. I just want either a plain map with an example of the spawn and attack triggers with two or more destination points, or maybe a description as to how I can do this in the map editor.

Thanks,

Richard

Uhm. Order the building to train a unit every so often, unit enters entire map, if entering-unit owned by [comp] order it to attack to [region].