edge 1.27 : question about 'side' tag in things.ddf

[ViperBoy]

Since i suck at math (or the fact that i'm no genius) i need someone to spell this out for me:

I wanna do a scene like the castle in Strife where you have a bunch of friendlies and a bunch of evil ones battle it out. What i want is to make a new Thing that is player friendly and shoots at enemies so i wanna know what value the side tag in this Thing has to have.

If I set both the player and the friendly thing's Side = 1, the thing's have to kill the player before moving on to killing the enemies.