Just watched Secret Army (not the drama) but the 8 part documentary series from a few years ago about the secret Auxiliary Units set up throughout the country to form a British Resistance Unit if Adolf ever got his jackboots over here. Gladly not needed. Very interesting and some great anecdotes from the veterans. Only problem is it is on Amazon Prime, so if you have got Amazon give it a watch. I don't think it is available anywhere else I did a quick search on youtube, google etc but nothing came up.