Question: Captain Douglas Ricardo "Doug" Beattie MC is an Irish soldier and politician, "Born in barracks"" in 1965, his father was a warrant officer in which infantry rifle regiment of the British Army, first created in 1881 by the amalgamation of the 83rd (County of Dublin) Regiment of Foot and the 86th (Royal County Down) Regiment of Foot, but became which organization on 1 January 1921?
Sentence (from "11th Mechanized Corps (Soviet Union)"): On 16 January 1934 the corps received the honorific "Leningrad", the 31st Brigade received the honorific "named for Uritsky", the 32nd Brigade the honorific "named for Volodarsky", and the 33rd Brigade the honorific "named for Voskov".
Relevant evidence: No