RAF
Ramos, Fidel
Rape of Nanjing
Rasputin
Rawlings, Jerry
Red Army
Red Baron
Red Guards
Relativity, Theory of
Remarque, Erich Maria
Republicans in Spain
Revolutionary Alliance
Roaring Twenties
robotics
Romanov czars
Rome-Berlin Axis
Rommel, Erwin
Reagan, Ronald
Russian Civil War
Russo-Japanese War
