an informant.
spy
During World War 2, Germany had spies and practiced espionage. German espionage began before the World War, and dates back to before the bombing of Pearl Harbor.
they spied on their enemy
no there wasn't,
No
Uh, no.
nurses and spies
victors
Women may not have worked as clerks till World War I, but women worked as spies in many wars including the American Civil War and the Revolutionary War.
They used disguises of the enemy, as in... American Spies wear German Clothing Itailan Spies wear French Clothing Spies in World War 2 were more like "moles" than spies. A "mole" is like a spy, but they work for both sides, but provide info and really work for only one side.
mata hari
None. All German spies were captured before they had a chance to start operating.