Raising armies is more than counting people, putting them in uniform, and assigning them to formations. It demands efficient measures for recruitment, registration, and assignment. It requires processes for transforming common people into soldiers and then producing officers, staffs, and commanders to lead them. It necessitates balancing the needs of the armed services with industry and agriculture. And, often overlooked but illuminated incisively here, raising armies relies on medical services for mending wounded soldiers and programs and pensions to look after them when demobilized. is a transnational look at how the empire did not always get these things right. But through trial, error, analysis, and introspection, it levied the large armies needed to prosecute both wars. Contributors Paul R. Bartrop, Charles Booth, Jean Bou, Daniel Byers, Kent Fedorowich, Jonathan Fennell, Meghan Fitzpatrick, Richard S. Grayson, Ian McGibbon, Jessica Meyer, Emma Newlands, Kaushik Roy, Roger Sarty, Gary Sheffield, Ian van der Waag