Movies are fine.
Read 'The Green Berets' written by Robin Moore about the Green Berets during the Vietnam War.
It was Special Forces founder General William P. Yarborough who insisted that Moore go through the "Q Course" in order to better understand what made Special Forces "special."
Moore trained with the soldiers at Fort Benning and Fort Bragg for nearly a year, becoming airborne qualified. He then accompanied them on a deployment to Vietnam in 1963.
Moore's account included several controversial facts about Special Forces missions that were classified at the time, prompting Moore to publish his book as "fiction".