"An important study [tracing] the development of the Canadian Army during the First World War, from its militia roots and enlistment criteria through to the training of reinforcements. [It] adds a great deal of knowledge to our understanding of the conflict. A career soldier in the Canadian Army, Filling the Ranks is a testament to his dedication to history and to the Canadian Forces." Canada's History "Holt has accomplished an insider's study of how recruiting worked, [and] evolved, in a well-organised manner that unravels the nightmare of military bureaucracy." Canadian Military History