This is a reprint of the official 1962 U. S. Marine Corps Field Manual, presenting the tactics and techniques utilized by Marine Corps landing forces against guerrilla forces. This manual outlines the origin, objectives, and characteristics of guerrilla warfare as well as the tactics and techniques employed by guerrilla forces. It places emphasis on the planning and conduct of operations against guerrillas by Marine Corps forces. Additionally, it considers the employment of friendly guerrilla forces in support of amphibious operations.