Abercorn Barracks, Ballykinler, Co. Down was a military base used for training of British and American forces during the Second World War.
On 25th June 1942, King George VI and Queen Elizabeth visited Ballykinler, Co. Down where they inspected American troops and observed military displays.
On 17th September 1942, Sergeants from 241st Light Anti-Aircraft Training Regiment instructed American military personnel on recognition of wartime aircraft before demonstrating the use of Bofors Anti-Aircraft guns at Ballykinler, Co. Down.