The 2nd Royal Tank Regiment (2 RTR) is an armoured regiment of the British Army. It is part of the Royal Tank Regiment, itself part of the Royal Armoured Corps. It originally saw action as B Battalion, Tank Corps in 1917. The British Army is the land armed forces branch of the British Armed Forces. ... The Royal Tank Regiment is a unit of the British Army (formerly the Tank Corps and Royal Tank Corps). ... The Royal Armoured Corps (RAC) is currently a collection of ten regular regiments, mostly converted from old horse cavalry regiments, and four Yeomanry regiments of the Territorial Army. ...
The Household Cavalry Regiment (consisting of the Life Guards and the Blues and Royals) is not part of the RAC; instead it is part of the Household Cavalry, which is classed as a corps in its own right.
The Heavy Cavalry and Cambrai Band - this band represents the RoyalTankRegiment and the regiments of dragoon guards, and was formed in 2006 by the amalgamation of the Band of the Dragoon Guards and the RoyalTankRegiment Cambrai Band.
The Light Cavalry Band - this band represents the regiments of dragoons, hussars and lancers, and was formed in 2006 by the amalgamation of the Band of the Hussars and Light Dragoons and the Band of the Royal Lancers.
In retrospect it was clear that by 1918 the advent of modern vehicles with effective mobility and armor such as tanks and armored cars had spelt the end of horse troops as the key mobile element of an army.
Interestingly the post-war German Army (Reichsheer) was permitted a large proportion of cavalry (18 regiments or 16.4% of total manpower) under the conditions of the Treaty of Versailles.
In the British Army, all cavalry regiments were mechanised between 1929 and 1941, redefining their role from horse to armoured vehicles to form the Royal Armoured Corps together with the RoyalTankRegiment.