There’s always been a competition between armored units and infantry. As far back as the Middle Ages, developments in technology constantly shifted who had the upper hand. For example, gleaming knights of old wore heavy armor that protected them from most weaponry — at least until the Battle of Agincourt introduced the piercing, infantry-wielded English longbow. Throughout history, technologies developed back and forth, until, finally, the gun firmly established that an ordinary grunt could beat armor with a good shot. However, World War I drastically changed that dynamic. The tank emerged as the modern equivalent of armored knights, seemingly untouchable by infantry. The armored edge continued to grow through World War II. Even with the development of the bazooka, the best way to kill tanks was either with other tanks, or to call in artillery or air strikes. Times were tough for infantry.