The history of King's Corporal and Kitchener Sergeant in the Army is known to some, but is frequently the subject of argument. A writer to the Journal of Army Historical Research, 1935, states that the current tradition of the rank was instituted as a reward for gallantry during the South African War and existed during that campaign only. Private soldiers, it is said, once promoted King's Corporal-supernumerary to regimental establishment - could never be reduced except by the King himself.
In the same journal for 1936 a reprint from the Naval and Military Journal quoted the following on the subject of King's Corporal, which apparently was a "mention": "There was an official suggestion in 1901 to the effect that soldiers who had distinguished themselves in war-time, but were unsuited to be NCOs in peace-time, should be given some mark of distinction on the right arm, preferably an embroidered band, carrying with it a step in rank whilst actually on active service, with additional pay, and a donation of £10 at the end of it.
Some members of the War Office Committee who sat to consider the proposal objected to the monetary grant, urging that such was derogatory to the soldier, but one of them pointed out that "Lord Roberts had not hesitated to accept £100,000, so I cannot see why a soldier should object to receive £10." The idea, however, was not adopted, though some men were specially promoted in the field in the latter stages of the Boer War, and were generally known as 'Kitchener Sergeants'."
Many inquiries were made during World War II on the question of King's Corporal, whether it really existed or not. On 22 October 1944 a letter appeared in the London Times referring to the statement made by the Secretary of State for War in the British Parliament on 10 October. It had been asked on what authority Lord Kitchener had promoted a rifleman of the Rifle Brigade to the rank of King's Corporal on 8 December 1901. Other correspondents cited additional instances. The Times writer asked: "Can any authority say what the award is intended to convey to the recipient if it is not recognized in the War Office?"
During the South African War Australian contingents had King's Corporals and Kitchener Sergeants. It is recorded in official orders that two corporals and a lance-corporal were promoted sergeant and five troopers, a lance corporal and a private were promoted corporal by the Commander-in-Chief for gallantry in the field. These were termed "King's Corporals" and "Kitchener Sergeants" and the promotions were announced in orders under the heading of "mentions", and were published in the London Gazette.