This special 2 video set takes you inside the development of one of the most devastating and powerful instruments of 20th Century warfare, the Tank. Modern tanks saw limited action during WWI, but at the onset of WWII, armored warfare doctrine was redefined by the German Blitzkrieg, demonstrating the devastatingly effective use of tanks in combat. Armored vehicles and doctrine evolved during the war and much of the Allies' success in WWII can be traced to their development of superior armor and armored tactics. The United States Army, in its quest to be the best, created an ideal balance between mobility, protection and firepower that has made America's armored forces the fastest, best equipped and most lethal in the world. In this documentary, we explore the history an devolution of this extraordinary war machine.