Robertson was expected to remain Director of Military Training on the outbreak of World War I, but instead replaced Murray as Quartermaster General of the British Expeditionary Force (under Field Marshal French) from 5 August 1914.
Robertson was expected to remain Director of Military Training on the outbreak of World War I, or to become chief staff officer to the Home Defence Forces. Bonham-Carter 1963, p84-5 Instead he replaced Murray as Quartermaster General of the British Expeditionary Force (under Field Marshal French) from 5 August 1914.