This book, first published in 1962, was the first systematic study of partisan war, investigating questions thrown up by the success of guerrillas in the Second World War, where they were never decisively beaten by regular armies. Drawing on lessons from Soviet Russia and China in particular, areas with especially active and large partisan forces, this book evolves a doctrine of guerrilla war in modern conditions, with an analysis of partisans in post-war Malaya, Kenya, Cyprus, Vietnam, Algeria, Cuba and Laos.