In WWII the need for intelligence on the enemy's strategy was realized and so the United States developed the Office of Strategic Services or O.S.S. this was the first intelligence agency. Since then almost every country has adopted at least 1 intelligence agency.

But what exactly are intelligence agencies one might ask. Intelligence agencies are government-funded agencies dedicated to acquiring, exploiting, and analyzing information either for local (law enforcement) or global (national security, and foreign policy) purposes. The most renown methods include espionage, communication interception, and the use of encrypted messages (secret codes).