Pol Pot
Pol Pot went to the jungle and created a guerrilla force called the Khmer Rouge (the Khmer are the main ethnic group in Cambodia, and rouge is French for "red", the colour of Communism). The Khmer Rouge was made of mostly teenagers. Guerilla means that they hid and ambushed people rather than be visible and directly attack their enemies. They were the source of Pol Pot's power.