Open your missiom.sqm file, u should see something like this:
position[]={5363.975586,137.481888,10041.816406};
id=0;
side="Civilian";
....
change this to:
position[]={5363.975586,137.481888,10041.816406};
id=0;
side="WEST"---->if u want him to remain looking like a civ but from west side! u can use west/east/resistance
Don't change anything else