The military, in one form or another, are always part of the picture. This unique and compelling study investigates the circumstances that have produced starkly different systems of recruiting and employing soldiers in different parts of the globe over the last 500 years, on the basis of case studies from Europe, Africa, America, the Middle East and Asia. The authors, including Robert Johnson, Frank Tallett and Gilles Weinstein, conduct an international comparison of military service and warfare as forms of labour, and the soldiers as workers. This is the first study to undertake a systematic comparative analysis of military labour, addressing two distinct, and normally quite separate, communities: labour historians and military historians.