Ghost Recon Fan Group

FYI: http://ghostrecon.wikia.com/wiki/Ghost_Recon

The primary role of the Ghosts appears to be conducting deniable Advance Force Operations which often involve:

Direct Action
Special Reconnaissance
Unconventional Warfare

Secondary roles historically have included:

Close Protection
Counter terrorism
Counter intelligence
Counter-proliferation
Counter narcotics
Foreign Internal Defense
Personnel recovery

As Special Operations Operators they are trained to execute Direct Action raids (focused short-duration attacks). Typical tasks include: to assassinate or kidnap high value targets, secure or destroy sensitive documents and classified hardware, sabotage or harassment of the enemy.