Forwards: Rory Best, Sean Cronin, Tadhg Furlong, Cian Healy, Jamie Heaslip, Iain Henderson, Chris Henry, Jack McGrath, Jordi Murphy, Sean O'Brien. Paul O'Connell (c), Peter O'Mahony, Mike Ross, Donnacha Ryan, Richardt Strauss, Devin Toner, Nathan White.
Backs: Tommy Bowe, Darren Cave, Keith Earls, Luke Fitzgerald, Robbie Henshaw, Paddy Jackson, David Kearney, Rob Kearney, Ian Madigan, Conor Murray, Jared Payne, Eoin Reddan, Jonathan Sexton, Simon Zebo.
Form: Arguably the best in their history - and definitely the best since the inception of world rankings. Highly rated head coach Joe Schmidt has overseen successive 6 Nations titles in 2014/2015, and Ireland now sit second in the world standings, for the first time. Hopes are higher than ever that Ireland can reach a maiden World Cup semi-final or beyond.
Captain: Paul O'Connell. The talisman lock will bring down his marvellous Test career after this World Cup, and swap home province Munster for superstar French Riviera outfit Toulon. All Ireland demands a fitting swansong for one of their greatest ever players.
Star player: Johnny Sexton – Ireland are simply not the same team without the ice-cool British and Irish Lions fly-half. The tenacious, accurate and exacting playmaker holds Schmidt's meticulous gameplan together.
World Cup history: It's a catalogue of slight underachievement, if you're harsh: or at least perennial quarter-finalists. The Irish have only failed to reach the last eight in two of the seven tournaments to date. The 19-18 last-eight defeat to Australia in 1991 hit hard, but no doubt the 22-10 loss to Wales in 2011 resonates more for Ireland's current Test generation.
Ireland’s Pool D fixtures:
Sat 19 Sept IRELAND v CANADA (Millennium Stadium, 2.30pm)
Sun 27 Sept IRELAND v ROMANIA (Wembley, 4.45pm)
Sun 4 Oct IRELAND v ITALY (Olympic Stadium, 4.45pm)
Sun 11 Oct FRANCE v IRELAND (Millennium Stadium, 4.45pm)