British and American troops made use of the countryside and rivers around Downpatrick, Co. Down for training. Later in the war, evacuees arrived from Gibraltar.
On 11th January 1942, workers from a munitions factory in Northern Ireland experienced the opportunity of operating guns alongside a Royal Artillery battery.
On 1st December 1942, a military training exercise took place on the River Quoile near Downpatrick, Co. Down that saw the area covered with a thick smokescreen.