The Royal Horse Artillery was originally formed to provide support to the Cavalry. Although they also carried out a field role, they kept the cavalry role whenever possible. During WW2, Royal Horse Artillery regiments often provided support for the Armoured Divisions. Initially, this was from the Support Group of an Armoured Division, but they were soon intergrated in to the Division proper.
Under the two battery system, RHA Regiments were smaller than their RA counterparts. They had two batteries of 8 guns each instead of the RA’s 12 gun batteries.
Illustrations of the formation badges under which a unit served or supported are given. This is no guarantee that the unit used this formations badge.