[4] A former Irish Republican Army (IRA) prisoner, Louis Joseph Walsh (a native of County Londonderry and later a judge in County Donegal), published a book in 1921 about his experiences in various institutions in Northern Ireland including a chapter about his time in Ballykinlar Camp which describes, amongst other things, having to march for three miles, handcuffed and carrying luggage, only to be placed in bare huts with nothing to sleep in except damp straw.

[4][10] Notable internees included Seán Lemass (future Taoiseach) and Peadar Kearney, who wrote the Irish national anthem.

[1] A journalist of the time writing in the Belfast Newsletter waxed lyrical about the location describing it as a "camp situated in the centre of picturesque country, with the mountains of Mourne forming an imposing background.

On the edge of the camping ground, and within easy walking distance of the tents, is an arm of Dundrum Bay, and here the men will have swimming and bathing drills.

[1] During the Second World War the camp continued to be a military training establishment and the North Irish Horse record moving there to take over Valentine Tanks and convert to an armoured regiment.

The prisoners built a football pitch which was used after the war for training by both the English and Scottish national sides before Home Championship matches against Northern Ireland.

In 2008 it was announced that the 2nd Battalion of The Rifles based at Ballykinlar would be deployed to Kosovo to "combat fresh violence between ethnic Albanians and minority Serbs.

"[22] Sandes Home, the civilian charity which provides leisure and restaurant facilities in some bases, has had a presence at Ballykinlar Camp for over 100 years.