[PAR] [TLE] Irish Civil War [SEP] The Irish Civil War (Irish: "Cogadh Cathartha na hÉireann" ; 28 June 1922 – 24 May 1923) was a conflict that followed the Irish War of Independence and accompanied the establishment of the Irish Free State, an entity independent from the United Kingdom but within the British Empire. [PAR] [TLE] Denis O'Brien (police officer) [SEP] Detective Sergeant Denis O'Brien, Registration Number: 8288 (17 June 1899 – 9 September 1942), often called "Dinny O’Brien", was a veteran of the Irish War of Independence and the Irish Civil War.  He joined the Garda Síochána in 1933 and was killed by the Anti-Treaty IRA.
[PAR] [TLE] Irish Civil War [ SEP ] The Irish Civil War ( Irish : " Cogadh Cathartha na hÉireann " ; 28 June 1922 – 24 May 1923 ) was a conflict that followed the Irish War of Independence and accompanied the establishment of the Irish Free State , an entity independent from the United Kingdom but within the British Empire . [PAR] [TLE] Denis O'Brien ( police officer ) [ SEP ] Detective Sergeant Denis O'Brien , Registration Number : 8288 ( 17 June 1899 – 9 September 1942 ) , often called " Dinny O’Brien " , was a veteran of the Irish War of Independence and the Irish Civil War . He joined the Garda Síochána in 1933 and was killed by the Anti - Treaty IRA .
Denis O'Brien was a veteran of what conflict that led to the establishment of the Irish Free State?
Denis O'Brien was a veteran of what conflict that led to the establishment of the Irish Free State ?
Irish Civil War
Irish Civil War