It is not surprising that Western statesmen and students of politics everywhere have recently begun to give major attention to what are variously termed guerrilla warfare, irregular warfare, paramilitary operations, la guerre révolutionnaire, insurrectional warfare, resistance movements, and other, allegedly military, doctrines. Of course, irregular armed struggles are not a unique feature of mid-twentieth-century politics; however, they have occurred with great frequency in our time and, more important, they have resulted in baffling victories over vastly better armed, better trained, and more numerous forces. President Kennedy, in response to the apparent superiority in military doctrine possessed by Communist forces in Asia, has ordered the rapid expansion of United States “guerrilla and counter-guerrilla forces.” On a more prosaic level, the publication in a national Sunday-morning newspaper of excerpts from a celebrated pamphlet on guerrilla warfare by Mao Tse-tung suggests that “guerrilla warfare,” along with “massive retaliation,” has entered the popular Cold War vocabulary.