Ressaidar was a Viceroy's commissioned officer's (VCO) rank in the British Indian Army. Ressaidar denoted a junior commander of a risala or risalah (a body of horse,[1] regardless if troop or regiment[2]) in Persian.
This native Officer's rank existed in Cavalry only, there was never a corresponding position in the other arms. A Ressaidar was a junior troop commander, so he could be regarded as native junior 'Captain'.[3] He was usually the head of the second troop of a squadron, while the first troop was led by a Risaldar, who was a native senior 'Captain'.[4]
During the British Raj, a Ressaidar ranked above Jemadar or Naib-Risaldar (rank abolished in 1865[5]) and below Risaldar (with the latter he was sometimes confused with, even by authors of military literature). A Ressaidar was roughly equivalent to a 'Captain, 2nd Class' or 'Captain lieutenant', but in World War I, he was classified as native 'Lieutenant'.[6] Nevertheless, all VCO's were always outranked by the lowest british Officer with a full commission.
The rank of Ressaidar was abolished with effect from 1st April 1921. Indian Officers then holding that rank were to be promoted to Risaldar.[7][8]