This field manual establishes doctrine for military operations in a counterinsurgency (COIN) environment. It is based on lessons learned from previous counterinsurgencies and contemporary operations. It is also based on existing interim doctrine and doctrine recently developed. Counterinsurgency operations generally have been neglected in broader American military doctrine and national security policies since the end of the Vietnam War over 40 years ago. This manual is designed to reverse that trend. It is also designed to merge traditional approaches to COIN with the realities of a new international arena shaped by technological advances, globalization, and the spread of extremist ideologies--some of them claiming the authority of a religious faith. This is a comprehensive manual that details every aspect of a successful COIN operation from intelligence to leadership to diplomacy. It also includes several useful appendices that provide important supplementary material.

This field manual establishes doctrine (fundamental principles) for tactical counterinsurgency (COIN) operations at the company, battalion, and brigade level. It is based on lessons learned from historic counterinsurgencies and current operations. This manual continues the efforts of FM 3-24, Counterinsurgency, in combining the historic approaches to COIN with the realities of today's operational environment (OE)-an environment modified by a population explosion, urbanization, globalization, technology, the spread of religious fundamentalism, resource demand, climate change and natural disasters, and proliferation of weapons of mass destruction. This manual is generic in its geographic focus and should be used with other doctrinal sources.

At its heart, a counterinsurgency is an armed struggle for the support of the population. Support can be achieved or lost through information engagement, strong representative government, access to goods and services, fear, or violence. This armed struggle also involves eliminating insurgents who threaten the safety and security of the population. However, military units alone cannot defeat an insurgency. Most of the work involves discovering and solving the population's underlying issues, that is, the root causes of their dissatisfaction. Tactics In Counterinsurgency provides the reader with the tactical leadership skills necessary to handle these diverse issues.

This manual gives the US Army a common language, concept, and purpose to fight and achieve success in a counterinsurgency. COIN is a complex subset of warfare that encompasses all military, paramilitary, political, economic, psychological, and civic actions taken by a government to defeat an insurgency at the company, battalion, and brigade levels. To do this, the manual merges traditional approaches to COIN with the realities of the current operational environment.

Confronting insurgent violence in Iraq and Afghanistan, the U.S. military has recognized the need to “re-learn” counterinsurgency. But how has the Department of Defense with its mixed efforts responded to this new strategic environment? Has it learned anything from past failures? In The New Counterinsurgency Era, David Ucko examines DoD’s institutional obstacles and initially slow response to a changing strategic reality. Ucko also suggests how the military can better prepare for the unique challenges of modern warfare, where it is charged with everything from providing security to supporting reconstruction to establishing basic governance—all while stabilizing conquered territory and engaging with local populations. After briefly surveying the history of American counterinsurgency operations, Ucko focuses on measures the military has taken since 2001 to relearn old lessons about counterinsurgency, to improve its ability to conduct stability operations, to change the institutional bias against counterinsurgency, and to account for successes gained from the learning process. Given the effectiveness of insurgent tactics, the frequency of operations aimed at building local capacity, and the danger of ungoverned spaces acting as havens for hostile groups, the military must acquire new skills to confront irregular threats in future wars. Ucko clearly shows that the opportunity to come to grips with counterinsurgency is matched in magnitude only by the cost of failing to do so.

David Kilcullen is one of the world's most influential experts on counterinsurgency and modern warfare, a ground-breaking theorist whose ideas "are revolutionizing military thinking throughout the west" (Washington Post). Indeed, his vision of modern warfare powerfully influenced the United States' decision to rethink its military strategy in Iraq and implement "the Surge," now recognized as a dramatic success. In Counterinsurgency, Kilcullen brings together his most salient writings on this vitally important topic. Here is a picture of modern warfare by someone who has had his boots on the ground in some of today's worst trouble spots-including Iraq and Afghanistan-and who has been studying counterinsurgency since 1985. Filled with down-to-earth, common-sense insights, this book is the definitive account of counterinsurgency, indispensable for all those interested in making sense of our world in an age of terror.

This is Change 1 to the May 2014 version of FM 3-24 MCWP 3-33.5 Insurgencies and Countering Insurgencies. This version, that was released in late June 2014, has changes in chapters 1, 2, 4, and 7. Overall, FM 3-24 MCWP 3-33.5 is divided into three parts. Part one provides strategic and operational context, part two provides the doctrine for understanding insurgencies, and part three provides doctrine for defeating an insurgency. In short, FM 3-24/MCWP 3-33.5 is organized to provide the context of a problem, the problem, and possible solutions.Part one, the “Strategic and Operational Context,” provides a framework for understanding the environment where a counterinsurgency exists. Part one consists of chapters one through three.Part two, “Insurgencies,” provides a doctrinal framework for understanding an insurgency. Part two consists of chapters four and five.Part three, “Counterinsurgencies,” describes how to plan and execute operations to enable a host nation to defeat an insurgency.Chapter 1, “Understanding the Strategic Context” Chapter 2, “Understanding an Operational Environment” Chapter 3, “Culture” Chapter 4, “Insurgency Prerequisites and Fundamentals” Chapter 5, “Insurgency Threat Characteristics” Chapter 6, “Command and Control and Mission Command” Chapter 7, “Planning and Operational Considerations” Chapter 8, “Intelligence” Chapter 9, “Direct Approaches to Counter an Insurgency” Chapter 10, “Indirect Methods for Countering Insurgencies” Chapter 11, “Working with Host-Nation Forces” Chapter 12, “Assessments” Chapter 13, “Legal Considerations”

Controversial new history of counterinsurgency which challenges its claims as an effective strategy of waging war.

This paper focuses on the formulation of doctrine since World War II. In no comparable period in history have the dimensions of the battlefield been so altered by rapid technological changes. The need for the tactical doctrines of the Army to remain correspondingly abreast of these changes is thus more pressing than ever before. Future conflicts are not likely to develop in the leisurely fashions of the past where tactical doctrines could be refined on the battlefield itself. It is, therefore, imperative that we apprehend future problems with as much accuracy as possible. One means of doing so is to pay particular attention to the business of how the Army's doctrine has developed historically, with a view to improving methods of future development.

Armies are invariably accused of preparing to fight the last war. Nagl examines how armies learn during the course of conflicts for which they are initially unprepared in organization, training, and mindset. He compares the development of counterinsurgency doctrine and practice in the Malayan Emergency from 1948-1960 with that developed in the Vietnam Conflict from 1950-1975, through use of archival sources and interviews with participants in both conflicts. In examining these two events, he argues that organizational culture is the key variable in determining the success or failure of attempts to adapt to changing circumstances. Differences in organizational culture is the primary reason why the British Army learned to conduct counterinsurgency in Malaya while the American Army failed to learn in Vietnam. The American Army resisted any true attempt to learn how to fight an insurgency during the course of the Vietnam Conflict, preferring to treat the war as a conventional conflict in the tradition of the Korean War or World War II. The British Army, because of its traditional role as a colonial police force and the organizational characteristics that its history and the national culture created, was better able to quickly learn and apply the lessons of counterinsurgency during the course of the Malayan Emergency. This is the first study to apply organizational learning theory to cases in which armies were engaged in actual combat.