It was abolished in the Cardwell Reforms of 1871 and replaced by sub-lieutenant. It is equivalent to a modern second lieutenant. The term today is restricted to internal regimental use when referring to a second lieutenant in the Blues and Royals and Queen's Royal Hussars.
This rank was also used in other countries, e.g., in the Russian Empire, and the Prussian cavalry, before 1870.
The rank also existed in other nation's cavalry troops, such as those of Sweden (kornett) and Imperial Russia (корнет), and by the Continental Army in the American War of Independence. General Alexander Macomb was initially commissioned a cornet in a career in which he eventually became Commanding General of the United States Army. It is still used in the artillery and cavalry divisions of the Netherlands (kornet).
The rank of field cornet (veldkornet) was used for the senior officer of a ward or sub-district in the independent republican states of the Transvaal and Oranje-Vrystaat in late 19th century South Africa. They were elected by the commandos of their ward for periods of three years. In the case of large wards, an assistant field cornet could also be chosen. The rank was reminiscent of the Dutch use in cavalry troops that the commandos most closely resembled. In apartheid-era South Africa, the rank of field cornet was used in the South African Army from 1960 to 1968.
- "No. 26600". The London Gazette. 19 February 1895. p. 1001.
- "The Armed Forces (Forms of Address)". Debretts. Retrieved March 2, 2018.
- Colonel Ninian Beall. (1937). Caleb Clarke Magruder. Records of the Columbia Historical Society. Vol. 37/38. pp. 17-29.
- p.973 Tucker, Spencer C. The Encyclopedia of the Wars of the Early American Republic, 1783–1812: A Political, Social, and Military History [3 volumes]: A Political, Social, and Military History ABC-CLIO, 11 Jun 2014
- Bell, William Gardner, Commanding Generals and Chiefs of Staff, 1775–2005: Portraits & Biographical Sketches of the United States Army's Senior Officer (Washington, D.C.: Center of Military History, U.S. Army, 2006). ISBN 0-16-072376-0.
- Major-General Sir Frederick Maurice, History of the War in South Africa 1899–1902 v. 1 (of 4) (Hurst and Blackett Limited, 1906)
- "A dictionary of South African English on historical principles". Dictionary Unit for South African English - Rhodes University.
- Duxbury, G. R. (June 1968). "Changes in Ranks and Designations in the South African Defence Force". Military History Journal. The South African Military History Society. 1 (2). ISSN 0026-4016.