List of British Army Yeomanry Regiments converted to Royal Artillery

This is a list of British Army Yeomanry Regiments converted to Royal Artillery. In the aftermath of the First World War 25 Yeomanry regiments of the British Army were transferred to the Royal Artillery between 1920 and 1922 with another one – the City of London Yeomanry (Rough Riders) – reduced to a battery in another regiment. A further seven regiments were converted during the Second World War.

Under threat of invasion by the French Revolutionary government from 1793, and with insufficient military forces to repulse such an attack, the British government under William Pitt the Younger decided in 1794 to increase the Militia and to form corps of volunteers for the defence of the country. The mounted arm of the volunteers became known as the "Gentlemen and Yeomanry Cavalry". Despite the end of the Napoleonic Wars in 1815, the Yeomanry was retained by the government "for Military Service in aid of the Civil Power" in the absence of organised police forces.

The Yeomanry was not intended to serve overseas, but due to the string of defeats during Black Week in December 1899, the British government realized they were going to need more troops than just the regular army. A Royal Warrant was issued on 24 December 1899 to allow volunteer forces to serve in the Second Boer War. The Royal Warrant asked standing Yeomanry regiments to provide service companies of approximately 115 men each for the Imperial Yeomanry. In the aftermath of the war, a number of new regiments were formed and Haldane's Reforms resulted in a more effective reserve force for home defence. By the outbreak of the First World War, there were 55 regiments.

...
Wikipedia