The founder members were Paddy Daly (leader), Mick McDonnell, Ben Barrett, James Conroy, Sean Doyle, Joe Leonard, Pat McCrea, Jim Slattery and Bill Stapleton. They were employed full time and received a weekly wage.
On 30 July 1919, the first assassination authorised by Michael Collins was carried out when Detective Sergeant "the Dog" Smith was shot near Drumcondra, Dublin.[2] The Squad would continue targeting plainclothes police, members of the G Division of the Dublin Metropolitan Police, andoccasionallyproblematic civil servants. Organisationally it operated as a subsection of Collins' Intelligence Headquarters.
Further members included Mick Love, Gearoid O'Sullivan, Patrick Caldwell, Charlie Dalton, Mick O'Reilly, Vincent Byrne, Sean Healy, James Ronan, Tom Keogh, and Tom Cullen, Johnny Wilson, Seán Lemass and Stephen Behan (the father of Irish writers Brendan and Dominic Behan). Understandably, there is no hard evidence to support many of these names; however, those that subsequently served in the Irish Army have their active service recorded in their service records held in the Military Archives Department in Cathal Brugha Barracks, Rathmines. Dr. Andy Cooney is also reported to have been associated with "The Squad".
Bloody Sunday
One of the Apostles' particular targets was the Cairo Gang, a deep cover British intelligence group, so called since it had largely been assembled from intelligence officers serving in Cairo and the Middle East. The Cairo Group was brought in during the middle of 1920 by Sir Henry Wilson explicitly to deal with Michael Collins and his organisation. Given carte blanche in its operations by Wilson, the strategy adopted by the Cairo Group was to assassinate members of Sinn Féin unconnected with the military struggle, assuming that this would cause the IRA to respond and bring its leaders into the open.
The most well-known operation executed by the Apostles occurred on Bloody Sunday, November 21, 1920, when British MI5 officers, linked to the Cairo Gang significantly involved in spying, were shot at various locations in Dublin (14 were killed, six were wounded). In addition to the "Twelve Apostles", a larger number of IRA personnel were involved in this operation. The only IRA man captured during the operation was Frank Teeling. In response to the killings, the Black and Tans retaliated by shooting up a Gaelic football match between Dublin and Tipperary at Croke Park, killing 14 civilians including one of the players, Michael Hogan, and wounding 68.