The Imperial Yeomanry was a British volunteer cavalry regiment that mainly saw action during the Second Boer War. Officially created on 24 December 1899, the regiment was based on members of standing Yeomanry regiments, but also contained a large contingent of mid-upper class English volunteers. In Ireland 120 men were recruited in February 1900. It was officially disbanded in 1908.
On 13 December 1899, the decision to allow volunteer forces serve in the Second Boer War was made. 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, thus issuing a Royal Warrant on 24 December 1899. This warrant officially created the Imperial Yeomanry.
The Royal Warrant asked standing Yeomanry regiments to provide service companies of approximately 115 men each. In addition to this, many British citizens (usually mid-upper class) volunteered to join the new regiment. Although there were strict requirements, many volunteers were accepted with substandard horsemanship/marksmanship; however, they had significant time to train while awaiting transport.
The first contingent of recruits contained 550 officers, 10371 men with 20 battalions and four companies, which arrived in South Africa between February and April, 1900. Upon arrival, the regiment was sent throughout the zone of operations.