Canadian Army Service Corps (CASC) at Valcartier Camp, September 1914. The photo shows large trucks in a depot. The Canadian Army Service Corps (CASC) was formed on November 1, 1901. It was modelled directly on the British Army Service Corps to provide all transportation and supply services to the Army. Initially, the CASC consisted of four companies to support the Active Militia units. The Corps grew quickly, doubling the number of units by 1903, and growing by another three companies by 1905. By the summer of 1914 the CASC had a strength of 3000 personnel in eighteen companies. During World War I, the CASC provided a support element for each Canadian Division, and later on, for the Canadian Corps. With the introduction of motorized vehicles, the CASC carried commodities of a greater range and of greater weights. Motorized transportation also resulted in expanded responsibilities such as driving ambulances and engineer pontoon vehicles, carrying all natures of ammunition, and mobile repair and recovery. This photo is from the album of Marshall Beck.