In Power Pack: U S Intervention in the Dominican Republic. 1965-1966, Dr. Lawrence A. Yates vividly describes the role of the military in what today would be termed peacetime contingency and peacekeeping operations. After tracing the origins of the Dominican crisis, Dr. Yates analyzes the concerns that led to U.S. intervention; the joint planning, command and control arrangements, and intelligence-gathering efforts that preceded and followed the introduction of U.S. marines and paratroopers into the country; the missions of those forces and the difficulties they encountered; the formation of an inter-American peace force that transformed unilateral intervention into a multilateral undertaking; and the way in which military forces provided the foundation upon which a political settlement was negotiated.