The Eagles might be well known to some fans who will remember Eddie O'Sullivan's time in charge at the last World Cup, but in case you want to bluff your way through their matches, here's a handy guide.
World Ranking: 15
Key Player: Samu Manoa, who was one of the 10 players who left Northampton at the start of the summer, having helped them to the semi-final of the Premiership playoffs. The 30-year-old is now a team-mate of Ireland's Paul O'Connell at Toulon, and is not one to shirk a tackle either...
Head Coach: Mike Tolkin
RWC appearances: 6
Best Result: One win in their Pool in 1987, 2003 and 2011
Did you know?: Fly half Alan "AJ" MacGinty was born in Dublin and played for Blackrock College, while back row John Quill is also an Irishman who hails from Cork.
Image: AJ Macginty playing for Blackrock College in 2010 - INPHO/Lorraine O'Sullivan
Fixtures: Samoa v USA - Brighton Community Stadium, 20th September, 12pm
Scotland v USA - Elland Road, 27th September, 2.30pm
South Africa v USA, Queen Elizabeth Olympic Park, 7th October, 4.45pm
Japan v USA, Kingsholm Stadium, 11th October, 8pm
