In this episode of Battleground '44, Saul speaks to former SAS troop commander Tom Petch - author of the book Speed, Aggression, Surprise: The Untold Secret Origins of the SAS.
Together they discuss the role the SAS played in the second world war and in particular the role they played in operation Overlord.
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Producer: James Hodgson
X (Twitter): @PodBattleground
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