The Royal Canadian Armoured Corps (RCAC; ) is the armoured corps within the Canadian Army, including 3 Regular and 18 Reserve Force regiments as well as the Royal Canadian Armoured Corps School. The corps was formed as the Canadian Armoured Corps in 1940, within the Canadian Army (Active). In August 1945, it was given its "royal" designation, and following the Second World War, several Reserve Force units were incorporated into the corps. From 1968 until 2013 it was officially named the Armoured Branch. History Pre-1940 Originally formed as the Canadian Cavalry Corps in 1910, Canada's first tank units were not raised until late in 1918. Initially these units were considered to be part of the Machine Gun Corps and the 1st Canadian Tank Battalion, 2nd Canadian Tank Battalion and the 3e Bataillon de chars d'assaut were all too late to join the fighting in the First World War. However, the 1st Canadian Tank Battalion was still training in Mark V tanks in the U.K. when the Canadian Tank Corps was finally authorized two days after the armistice. It seems like tanks were forgotten by the Cavalry after the war. Although, in the 1930s there were some small attempts at mechanization with motorcycles, experimental armoured cars and the purchase of a few tracked Carden-Loyd machine gun carriers for training. However, the first tanks since the First World War did not arrive until a few machine gun armed Vickers Mark VI light tanks appeared just one year before Canada went to war with Germany again. Regimental Heritage Canadian armoured regiments split their heritage between two primary sources. The first being the cavalry corps, from which many armoured regiments were created and in fact the first "armoured" regiments were titled "mechanized cavalry" regiments, and the second being the tank corps (which formerly belonged to first the infantry and then the machine gun corps). This began in 1936 with the creation of tank battalions and continued on from 1940 when many other types of regiment were mobilized as armoured units for the Second World War. The Second World War From these modest beginnings the modern Canadian Armoured Corps began on 13 August 1940 with Major-General (then Colonel) F. F. Worthington as its first colonel-commandant. Over the course of the war from 1939 to 1944, the Armoured Corps gradually took over responsibilities from other Corps, such as Tank Regiments all being converted to Armoured Regiments,