The First World War S01E08 - Revolution

The wartime employment of spies, blockades and intelligence-gathering, which proved just as important as battleships at a time when governments faced continuing risks of mutiny, low morale, strikes and civil disobedience.

Agents were sent to create unrest among the enemy, including the British-sponsored Arab Revolt led by Lawrence of Arabia, and Germany's support of Irish independence by supplying arms for the Easter Rising.