Bumbled on to a whole bunch of BBC produced episodes of a guy named Ray Mears talking about all sorts of survival techniques, with a pretty big emphasis on food. He also has a couple where he retraces the steps of Geronimo, or Rogers Rangers. Pretty interesting if you're into that type of thing. Well produced and not the sensationalist Bear Gryls nonsense.

example:

https://www.youtube.com/watch?v=JCkT8cwJPZM&feature=related

At the risk of bumping my own bullshit, look into the Thailand episode, it's about US pilots shot down in SE Asia.

I like this guy, he reminds me of Les Stroud, the talented Canadian of Survivorman fame.

https://www.lesstroud.ca/survivorman/home.php