[5] He carried out the necessary staff work which led to the formation of the "Canadian Corps of Guides" (C of G) as authorized by "General Order 61 of 01 April 1903.

From the authorizing order, it is apparent that one of the functions of the C of G was to ensure that in the event of war on Canadian soil, the defenders would possess detailed and accurate information of the area of operations.

The ranks of the C of G were filled quickly, and by the end of 1903, the General Officer Commanding the militia reported, "The formation of the Corps has been attended by the best possible results.

Canada is now being covered by a network of Intelligence and capable men, who will be of great service to the country in collecting information of a military character and in fitting themselves to act as guides in their own districts to forces in the field.

Special courses stressed the organization of foreign armies, military reconnaissance, and the staff duties of intelligence officers.

Instruction in drill and parade movements was kept to a minimum, although this was covered in other training that Guides officers and NCOs were required to complete before promotion.

"The first DGMI was Brevet-Major William A.C. Denny, Royal Army Service Corps, psc, a veteran of South Africa."

[5] Prior to the outbreak of war, the full dress uniform of the Canadian Corps of Guides comprised a khaki "lancer style" tunic with scarlet plastron, cuffs and collars.

A white Wolseley helmet with bronze spike and scarlet/khaki puggaree were parts of the corps' distinctive full dress.

[8][9] When Canada entered the Great War on 4 August 1914, "the Corps of Guides volunteered for service in a body and a concentration...moved to Camp Valcartier as part of the general mobilization" then in progress.

The Guides were organized for employment as a domestic field intelligence and scouting force within Canada and were therefore not required in France and Belgium.

Non-Commissioned Officers and men were absorbed into cavalry, horse artillery and various other Staff duties and, subsequently, into the Cyclist Corps which later became the natural channel for the absorption of the Guide personnel.

"After the initial rush of mobilization at Valcartier, Guides units were activated for home defence duties under Order in Council PC 2067/2068.

No 11 Mounted Detachment of the Corps of Guides was formally called-out on Active Service under General Order (GO) in 1914, to perform local security duties within Vancouver, British Columbia.

After the war, the Director of Military Operations and Intelligence (DMO&I), Col J. Sutherland-Brown, had planned to convert the Mounted Detachments of the Guides into Cyclist Companies for use as divisional-level Mounted Troops for security and protection duties, all while retaining the Corps' role as it related to military intelligence staff duties.