Operation Lena
After Operation Sea Lion, the German plan for the invasion of the United Kingdom was written out by the German High Command, they realized they barely had any intelligence officers in Britain, and they weren’t sure what was going on across the English Channel. They thought up Operation Lena, and its purpose was to establish a network of Abwehr agents in Britain. It would be one of the most disastrous intelligence missions the Nazi regime would undertake during the Second World War.
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Credit to : House of History