
EXECUTED: Margaretha Geertruida Zelle
On 15 October 1917, Margaretha Geertruida Zelle, known as Mata Hari, was executed by a French firing squad at Vincennes after a secret court-martial convicted her of espionage. The French military file, declassified only in 1985, revealed evidence so thin that later scholars questioned whether the conviction could have been sustained in an open court. The identity of German agent H21, the designation used to link Zelle to German intelligence, has never been confirmed by any German archive.
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