On 2nd April 1919 at 12 noon a Memorial Service for the Fallen of the Household Cavalry was held in Westminster Abbey in the presence of the King and Queen and the Queen Mother (Queen Alexandra), conducted by the Dean. Music was provided by the bands of the three regiments, 1st Life Guards, 2nd Life Guards and Royal Horse Guards (the Blues). The first part of this booklet contains the form of Service and this is followed by the Roll of Honour which features not just the three Regiments but also the Household (infantry) Battalion, formed in September 1916 from the three Reserve Regiments and from Yeomanry Regiments, it served in the trenches till disbanded in February 1918; the Guards MG Regiment formed in April/May 1918 when the three Mounted Regiments were converted to three MG battalions; and the 520th (Household)Siege Battery RGA formed in April 1918. Warrant Officer and NCO ranks may need some explaining: a Sergeant is a Corporal of Horse, a Sergeant Major is a Corporal Major, so the RSM in the Household Cavalry is the RCM, or Regimental Corporal Major. Private soldiers were Troopers.