39th Central India Horse

Chronology

1857 Two irregular cavalry units formed by William Ferguson Beatson and known as Beatson's Horse
1860 became 2nd Corps Mayne's Horse
1860 renamed 2nd Regiment of Central India Horse
1903 became the 39th Central India Horse
1906 became the 39th Prince of Wales's Own Central India Horse
1910 became the 39th King George's Own Central India Horse
1921 amalgamated with the 38th King George's Own Central India Horse to become the 38th/39th Cavalry
1922 became the 38th/39th King George's Own Light Cavalry
1923 became The Central India Horse (21st King George's Own Horse)
1937 became The Central India Horse (21st King George V's Own Horse)
1947 allocated to India on Partition
1950 became The Central India Horse

William Beatson. Note that there was a regiment of Irregular Turkish Cavalry at the Dardanelles during the Crimean War which was also known as Beatson's Horse.

Page 167 From Midshipman to Field Marshal, Volume I by Evelyn Wood 1906 Archive.org. The author joined Beatson's Horse in 1859 and subsequently became commander. He was awarded the Victoria Cross. He left India in 1860.