Britain had an entire program during WWII designed to identify, capture and turn German agents to get them to feed disinformation to their superiors: https://e

Britain had an entire program during WWII designed to identify, capture and turn German agents to get them to feed disinformation to their superiors: https://en.wikipedia.org/wiki/Double-Cross_System https://en.wikipedia.org/wiki/Double-Cross_System It was used in a clever manner to subtly suggest to the Germans an incorrect location (Pas-de-Calais) for D-Day. WWII produced some of the most interesting (now publicly known) espionage operations. My favourite is Operation Mincemeat: https://www.damninteresting.com/mincemeat-and-the-imaginary-man/ https://www.damninteresting.com/mincemeat-and-the-imaginary-...