Powell. McChrystal. McCaffrey. Petraeus. Clark. For the first time, National Geographic Channel gathers the nation's leading war generals for an unprecedented look at 50 years of military history, from the Vietnam War to America's war on Al-Qaeda. The two-hour special on American War Generals reveals never-before-heard stories and insightful opinions from eleven active and retired U.S. Army generals. Their accounts take us through the big changes that have transformed the U.S. military from the first troops to enter Vietnam to the last combat troops to exit Afghanistan, explaining the critical personal experiences that shaped their lives and the way they approached modern warfare.