Find Spy

One of the most effective ways to gather data and information about the enemy (or potential enemy) is by infiltrating the enemy's ranks.

This is the job of the spy (espionage agent).

Spies can bring back all sorts of information concerning the size and strength of an enemy army.

They can also find dissidents within the enemy's forces and influence them to defect.

In times of crisis, spies can also be used to steal technology and to sabotage the enemy in various ways.

Counterintelligence operatives can feed false information to enemy spies, protecting important domestic secrets, and preventing attempts at subversion.

from Wikipedia