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By the treaty of 1801 the Nizam of Hyderabad was obliged to maintain a military force called the The '''NizamDeccan Horse's Contingent'''. The subsequent treaty was the successor of 1853 renamed the force 1st and 2nd Cavalry Regiments of the '''[[Hyderabad Contingent''']]. During In 1903 they became the 19th century the names of the units changed from '''1st, 2nd, 3rd & 4th Regiments Nizam’s Cavalry''' to '''1st, 2nd, 3rd & 4th Cavalry Hyderabad Contingent[[20th Deccan Horse]]''' and the '''1st, 2nd, 3rd & 4th [[29th Lancers Hyderabad Contingent(Deccan Horse)]]'''respectively. The regiments were amalgamated in 1922 to form the Royal Deccan Horse (9th Horse) which changed to The Deccan Horse (9 Horse) on Indian independence.

== Chronology Battle Honours ==*'''1790''' raised as Asif Sah's Irregular Cavalry under the Colours of the Nizam of Hyderabad in Berar*'''1801''' became the Nizam's Contingent[[Indian Mutiny|Central India]]*'''1816''' Irregular Cavalry reorganised into four regiments [[Chronological list of the ‘Reformed Horse’*'''1853''' became the Hyderabad Contingent*'''1903''' 1st & 2nd Regiments became the 20th Deccan Horse and 29th Lancers (Deccan Horse), 3rd Regiment disbanded, 4th Regiment became 30th Lancers (Gordon's Horse)*'''1922''' 20th & 29th amalgamated to become the Royal Deccan Horse (9th Horse)*'''1947''' allocated to India on Partition*'''1950''' became The Deccan Horse (9 Horse)North West Frontier Campaigns|Punjab Frontier]]

==First World War==Regimental History: ''The Royal Deccan Horse In The Great War'' by Lieutenant-Colonel E. Tennant. For details of this history available online, see [[20th Deccan Horse]] and [[29th Lancers (Deccan Horse)]] == External Links links ==*[http://www.geocitiesindiapicks.com/stamparchivestamps/Forces/1111_DECCAN_HORSE1111_Deccan_Horse.htm The Deccan Horse] www.geocitiesindiapicks.com<br>*[http://en.wikipedia.org/wiki/29th_Lancers_(Deccan_Horse) 9th Royal Deccan Horse] Wikipedia == References ==<br>[http:references //indianarmy.nic.in/arms/kumaon/history.html Hyderabad Contingent] Indian Army Official website <br>[http {{#widget://www.britishempire.co.uk/forces/armyunits/indiancavalry/3rdlancers.htm British Empire - 3rd Lancers] British Empire websiteGoogle PlusOne|size=small|count=true}}