In 1973, not long after the last American combat troops returned from Vietnam, President Nixon fulfilled his campaign promise and ended the draft. No longer would young men find their futures determined by the selective service system; nor would the U.S. military have a guaranteed source of recruits.

America’s Army is the story of the all-volunteer force, from the draft protests and policy proposals of the 1960s through the Iraq War. It is also a history of America in the post-Vietnam era. In the Army, America directly confronted the legacies of civil rights and black power, the women’s movement, and gay rights. The volunteer force raised questions about the meaning of citizenship and the rights and obligations it carries; about whether liberty or equality is the more central American value; what role the military should play in American society not only in time of war, but in time of peace. And as the Army tried to create a volunteer force that could respond effectively to complex international situations, it had to compete with other “employers” in a national labor market and sell military service alongside soap and soft drinks.

Based on exhaustive archival research, as well as interviews with Army officers and recruiters, advertising executives, and policy makers, America’s Army confronts the political, moral, and social issues a volunteer force raises for a democratic society as well as for the defense of our nation.

What makes people fight and risk their lives for countries other than their own? Why did diverse individuals such as Lord Byron, George Orwell, Che Guevara, and Osama bin Laden all volunteer for ostensibly foreign causes? Nir Arielli helps us understand this perplexing phenomenon with a wide-ranging history of foreign-war volunteers, from the wars of the French Revolution to the civil war in Syria.

Challenging narrow contemporary interpretations of foreign fighters as a security problem, Arielli opens up a broad range of questions about individuals’ motivations and their political and social context, exploring such matters as ideology, gender, international law, military significance, and the memory of war. He shows that even though volunteers have fought for very different causes, they share a number of characteristics. Often driven by a personal search for meaning, they tend to superimpose their own beliefs and perceptions on the wars they join. They also serve to internationalize conflicts not just by being present at the front but by making wars abroad matter back at home. Arielli suggests an innovative way of distinguishing among different types of foreign volunteers, examines the mixed reputation they acquire, and provides the first in-depth comparative analysis of the military roles that foreigners have played in several conflicts.

Merging social, cultural, military, and diplomatic history, From Byron to bin Laden is the most comprehensive account yet of a vital, enduring, but rarely explored feature of warfare past and present.