The diary of David Watson, who rose through the officer ranks to command one of the four divisions in the Great War, is an exceptional document that details with candid insight the responsibilities of senior command and shows the talent required to rise through the CEF to divisional command. The only published diary of a Canadian who held this rank in the last two (critical) years of the war, it focuses on the evolution of military leadership and associated challenges that Watson (and his peers) faced during the Great War. It recounts how he navigated not only the military battlefield in France and Belgium but also the political battlefield of the Canadian Expeditionary Force and larger British Expeditionary Force. The divisional commanders played a central role in the Corps' transformation into a first-rate professional army, a transformation that coincided with Watson's tenure at the 4th Division. Major-General David Watson's personal accounts offer valuable insights into the innermost workings of the Canadian Corps at various stages during the war and in particular its emergence as an elite fighting force and the pride of a nation.

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.