Fascinating glimpse into old-school spycraft! This MI5 WWII guide shows how much the art of observation relied on intuition and subtlety—no fake moustaches needed! Makes you wonder how these skills have evolved in today’s high-tech world. 🕵️♂️📜https://t.co/Pwu22dOvr6 #spycraft pic.twitter.com/hNuTcsEB48
— Robert Morton (@Robert4787) January 14, 2025
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