Join Jocko Underground: https://www.jockounderground.com/subscribe Company A, First Battalion, Fifth Marines. Johnnie Clark is an American author and Vietnam Veteran, best known for his 1984 Vietnam War memoir Guns Up!. Many of his works fall into the genre of non-fiction military and contain a tough, no nonsense portrayal of combat, courage, and camaraderie. Join the conversation on Twitter/Instagram: @jockowillink @echocharles