1. The most successful female sniper in history, Lyudmila Pavlichenko, couldn't pull the trigger on her first kill until she saw a German shoot a young Russian soldier. "He was such a nice, happy boy..." "After that, nothing could stop me." She went on to record 309 confirmed kills in WWII. 2. During WW2, a German soldier named Fritz Christen stood his ground for 3 straight days and knocked out 13 Soviet tanks and killed nearly 100 enemy soldiers single-handedly.