The 2nd Brigade (2 BDE) (known as 2nd (Eastern) Brigade until the 2012 reorganisation of the army) (Irish: 2ú Briogáid) is a brigade of the Irish Army. The brigade headquarters are in Cathal Brugha Barracks in Dublin.^[1]

2nd Brigade provides security to various vital installations in its area of responsibility, including; Government Buildings, Áras an Uachtaráin (Residence of the President), foreign embassies, Dublin Airport, Dublin Docks (Dublin Port, Dún Laoghaire) and Ireland West Airport.^[2]

• Brigade HQ - Cathal Brugha Barracks, Dublin
• 6 Infantry Battalion (Athlone)
• 7 Infantry Battalion (Dublin)
• 27 Infantry Battalion (Dundalk)
• 28 Infantry Battalion (Ballyshannon)
• 2 Artillery Regiment (Athlone)
• 2 Cavalry Squadron (Dublin)
• 2 Communication and Information Services Company (Dublin)
• 2 Engineer Group (Athlone)
• 2 Supply & Transport Group (Athlone)
• 2 Ordnance Group (Athlone)
• 2 Military Police Company (Dublin)

• McKee Barracks, Dublin 7
• St Bricins Hospital, Dublin
• Gormanston Camp in County Meath
• Aiken Barracks, Dundalk
• Custume Barracks, Athlone
• Finner Camp in Ballyshannon

• Gormanston Camp
• Kilbride Camp
• Glen of Imaal