Until the formation of the service battalions in September 1968, all transportation service was provided by the Royal Canadian Army Service Corps (RCASC). The RCASC was established, by General Order No. 141, as the Canadian Army Service Corps (CASC), on 1 November 1901. The CASC was modelled directly off 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.