It's a special forces unit known largely for its secrecy, but Damien Lewis is on a mission of his own, to uncover everything about its beginnings. In this episode from the Dan Snow's History Hit archive, he tells us more about the formation of the SAS, starting in autumn 1940, two days after Dunkirk, with Colonel Dudley Clarke.© IWMFor more, subscribe to our Warfare Wednesday newsletter here. If you'd like to learn more, we have hundreds of history documentaries, ad free podcasts and audiobooks at History Hit - subscribe today!To download the History Hit app, go to Android or Apple store. See acast.com/privacy for privacy and opt-out information.