A Protector reconnaissance unit has followed an alien unit fleeing the destruction at Rimmon to a hidden enemy outpost.
The outpost is very well guarded and is situated atop a large plateau.  The plateau has a small path winding up the hillside to the alien communication buildings.  
The base is laden with monitoring equipment and is easily defended if they are aware of an incoming assault.  For stealth you must work alone on this one Merc.
You will be dropped to the north of the outpost.  You should proceed south to take out the defenses around the plateau.  Move carefully to avoid detection.
Once the area around the outpost is clear you should be able to attack the enemy outpost situated on the plateau. Don't worry about alien units you encounter.
Your main target is the enemy communication equipment.  Once it is destroyed a full scale assault can be launched to crush their futile resistance.