In 2005, Jeff Marshburn was a reconnaissance platoon leader in the 4th Battalion, 23rd Infantry Regiment, in Mosul, Iraq. While leading his platoon during the battalion's first contact with the enemy, several of his troops were wounded in action. In this episode of The Spear, Jeff recounts the lessons learned from his many combat missions in Iraq, with an emphasis on trust, competence, and the value of pre-deployment training.