Many books have been written about strategy, tactics, and great commanders. This is the first book to deal exclusively with the nature of command itself, and to trace its development over two thousand years from ancient Greece to Vietnam. It treats historically the whole variety of problems involved in commanding armies, including staff organization and administration, communications methods and technologies, weaponry, and logistics. And it analyzes the relationship between these problems and military strategy.

In vivid descriptions of key battles and campaigns—among others, Napoleon at Jena, Moltke’s Königgrätz campaign, the Arab–Israeli war of 1973, and the Americans in Vietnam—Martin van Creveld focuses on the means of command and shows how those means worked in practice. He finds that technological advances such as the railroad, breech-loading rifles, the telegraph and later the radio, tanks, and helicopters all brought commanders not only new tactical possibilities but also new limitations.

Although vast changes have occurred in military thinking and technology, the one constant has been an endless search for certainty—certainty about the state and intentions of the enemy’s forces; certainty about the manifold factors that together constitute the environment in which war is fought, from the weather and terrain to radioactivity and the presence of chemical warfare agents; and certainty about the state, intentions, and activities of one’s own forces. The book concludes that progress in command has usually been achieved less by employing more advanced technologies than by finding ways to transcend the limitations of existing ones.

Since World War II, the United States has been engaged in near-constant military conflict abroad, often with ill-defined objectives, ineffectual strategy, and uncertain benefits. In this era of limited congressional oversight and “wars of choice,” the executive and the armed services have shared the primary responsibility for making war. The negotiations between presidents and their generals thus grow ever more significant, and understanding them becomes essential.

Matthew Moten traces a sweeping history of the evolving roles of civilian and military leaders in conducting war, demonstrating how war strategy and national security policy shifted as political and military institutions developed, and how they were shaped by leaders’ personalities. Early presidents established the principle of military subordination to civil government, and from the Civil War to World War II the president’s role as commander-in-chief solidified, with an increasingly professionalized military offering its counsel. But General Douglas MacArthur’s insubordination to President Harry Truman during the Korean War put political-military tensions on public view. Subsequent presidents selected generals who would ally themselves with administration priorities. Military commanders in Vietnam, Iraq, and Afghanistan did just that—and the results were poorly conceived policy and badly executed strategy.

The most effective historical collaborations between presidents and their generals were built on mutual respect for military expertise and civilian authority, and a willingness to negotiate with candor and competence. Upon these foundations, future soldiers and statesmen can ensure effective decision-making in the event of war and bring us closer to the possibility of peace.