 In World War II 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.Troops from the United States, including those from the 1st Armored Division also trained at Ballykinlar.The year 1974 saw the Troubles in Ballykinler when a 300 lb Provisional Irish Republican Army van bomb killed two British Army soldiers, injured many others and destroyed some buildings on the base.