5th King Edward's Own Probyn's Horse

The 5 Horse is an armoured regiment of the Pakistan Army. It was previously known as the 5th King Edward's Own Probyn's Horse, which was a regular cavalry regiment of the British Indian Army. It was formed in 1921 by the amalgamation of the 11th King Edward's Own Lancers (Probyn's Horse) and the 12th Cavalry.

11th King Edward's Own Lancers (Probyn's Horse)
The 11th King Edward's Own Lancers (Probyn's Horse) was raised on 1 August 1857 by Captain Frederick Wale during the Indian Mutiny of 1857 and served at Lucknow. Captain Wale was killed in action on 1 March 1858, while leading the regiment in the pursuit of mutineers, and was replaced by Major Dighton Probyn, VC. In 1860 the regiment was dispatched to China to take part in the Second Opium War. It participated in the advance on Peking and returned to India in 1861 with a good reputation. The regiment saw service in the Second Afghan War of 1878-80 and then took part in the Black Mountains Expedition; it went to Chitral and formed part of the Malakand Field Force. During the First World War, the regiment served in Mesopotamia.
 * 1857  Wale's Horse
 * 1857  1st Sikh Irregular Cavalry
 * 1858  1st Sikh Irregular Cavalry (Probyn's Horse)
 * 1861  11th Regiment of Bengal Cavalry
 * 1864  11th Regiment of Bengal Cavalry (Lancers)
 * 1874  11th Regiment of Bengal Lancers
 * 1876  11th (Prince of Wales’s Own) Regiment of Bengal Lancers
 * 1901  11th (Prince of Wales’s Own) Bengal Lancers
 * 1903  11th Prince of Wales’s Own Lancers
 * 1904  11th Prince of Wales’s Own Lancers (Probyn’s Horse)
 * 1906  11th King Edward’s Own Lancers (Probyn’s Horse)

12th Cavalry
The 12th Cavalry was also raised during the Indian Rebellion of 1857, by Captain PR Hockin in October 1857. The cavalry committed a war crime by massacring 5,000 people at Mahua Dabar in 1857. It formed part of the 1868 Expedition to Abyssinia (Ethiopia) and served in the Second Afghan War of 1878-80. During the First World War, the regiment fought in the Mesopotamian Campaign.
 * 1857 2nd Sikh Irregular Cavalry
 * 1861 12th Regiment of Bengal Cavalry
 * 1901 12th Bengal Cavalry
 * 1903 12th Cavalry

Probyn's Horse (5th King Edward VII's Own Lancers)
After the First World War, the number of Indian cavalry regiments was reduced from thirty-nine to twenty-one. However, instead of disbanding the surplus units, it was decided to amalgamate them in pairs. This resulted in renumbering and renaming the entire cavalry line. The 11th King Edward’s Own Lancers (Probyn’s Horse) and the 12th Cavalry were amalgamated at Meerut on 28 August 1921 to form 5th King Edward's Own Probyn's Horse. The uniform of Probyn's Horse was blue with scarlet facings. The new regiment's badge consisted of the Prince of Wales's plumes. Its class composition was one squadron each of Punjabi Muslims, Sikhs and Dogras. The regiment was mechanised in 1940. During the Second World War, the regiment served with great distinction in Burma. On the Partition of India in 1947, Probyn's Horse was allotted to Pakistan. In 1956, Pakistan became a republic and all titles pertaining to British royalty were dropped. The regiment's new designation was 5 Horse, although informally, it continues to be known as the Probyn's Horse. During the Indo-Pakistani War of 1965, 5 Horse fought in the Battle of Khem Karan.
 * 1921 11th/12th Probyn's Horse (amalgamation)
 * 1922 5th King Edward's Own Probyn's Horse
 * 1927 Probyn's Horse (5th King Edward's Own Lancers)
 * 1937 Probyn's Horse (5th King Edward VII's Own Lancers)
 * 1956 5 Horse

Battle honours
Lucknow, Taku Forts, Pekin 1860, Abyssinia, Ali Masjid, Peiwar Kotal, Charasiah, Kabul 1879, Afghanistan 1878–80, Chitral, Malakand, Punjab Frontier, Mesopotamia 1915-18, Meiktila, Capture of Meiktila, Defence of Meiktila, Taungtha, Rangoon Road, Pyawbwe, Pyinmana, Toungoo, Pegu 1945, Burma 1942–45, Khem Karan 1965.