Page 24 of the Second World War Book of Remembrance. Service during the First World War When the British Empire declared war on the Central Powers on August 4, 1914, Brown was a captain in The RCR attending the Staff College in Camberley, England. Twenty days later, he was ordered back to Canada to assist in the massive logistical challenge of organizing, supplying and then transporting to England the 1st Canadian Division of the newly created CEF. On September 25 he was appointed to be Deputy Assistant and Quarter Master General of the Division. The First Contingent of the CEF, comprising over 31,500 men and officers along with guns, vehicles and over 7600 horses, embarked on September 26 for England in a convoy comprising 28 ocean liners that had been located and retained largely by Brown. Brown served with distinction as a logistics staff officer in the CEF for the duration of the First World War, reaching the rank of temporary lieutenant colonel in May 1916 in The RCR. While attached to the 1st Canadian Division he participated in most of the major Canadian military operations on the Western Front, including the Second Battle of Ypres, the Battle of the Somme, the Battle of Vimy Ridge, Third Battle of Ypres, and the Hundred Days Offensive that ultimately ended the First World War. Serious illness required him to withdraw to England for recuperation during the later half of 1916 and the first months of 1917. His military service continued during the Allied occupation of Germany after the Armistice was signed in November 1918. As a result of his service he was awarded the Distinguished Service Order (14 January 1916), was mentioned in dispatches five times (1 January 1916, 28 May 1917, 18 May 1918, 31 December 1918 and 11 July 1919) and was made a Companion of Order of St Michael and St George (6 March 1918). Director of military operations and intelligence After the war, as a lieutenant-colonel, Brown remained a professional officer in the greatly shrunken Canadian Army. In 1920 he was appointed director of military operations and intelligence in Ottawa. In this capacity he was responsible for developing a series of contingency war plans for a variety of possible scenarios. One of those scenarios was the possibility that hostilities might break out between the United States and the British Empire. It was as part of this work that