This book illuminates some of the most important activities with attendant problems, shortcomings, and achievements of the US Army Field Artillery in Vietnam. The wide variations in terrain, supported forces, density of cannon, friendly population, and enemy activity which prevailed throughout South Vietnam tend to make every action and every locale singular. Though based largely upon documents of an historical nature and organized in a generally chronological manner, this study does not purport to provide the precise detail of history. Its purpose is to present an objective review of the near past in order to assure current awareness, on the part of the Army, of the lessons we should have learned and to foster the positive consideration of those lessons in the formulation of appropriate operational concepts.