What fierce motivation drives warriors to commit themselves to a last stand against a more powerful and better-armed enemy? The reasons are countless: anger, fear, brotherhood, personal glory, and survival. These 13 examples of persistence against incredible odds come from two centuries worth of combat in Europe, Africa, Asia, and North America. Follow glorious battles from Napoleon and Wellington at Hougoumont to the bloody Civil War battle at Antietam to Pork Chop Hill in Korea.