When Great Britain and its dominions declared war on Germany in August 1914, they were faced with the formidable challenge of transforming masses of untrained citizen-soldiers at home and abroad into competent, coordinated fighting divisions. The Empire on the Western Front focuses on the development of two units, Britain’s 62nd (2nd West Riding) Division and the Canadian 4th Division, to show how the British Expeditionary Force rose to this challenge. By turning the spotlight on army formation and operations at the divisional level, Jackson calls into question existing accounts that emphasize the differences between the imperial and dominion armies.