Lance Bombardier Samuel John Boyce of Portadown, Co. Armagh was one of many members of the Royal Artillery to die on board Lisbon Maru on 1st October 1942.
On 3rd October 1942, a United States Army Air Force B-17 bomber crashed on Slieveanorra, Co. Antrim resulting in the deaths of eight of the ten-person crew.
On 4th October 1945, two Ulstermen died as a result of road traffic collisions in Germany and Singapore. Both had served their country in the Second World War.
On 7th October 1943, workers from a munitions factory in Northern Ireland watched as members of the Royal Artillery demonstrated with a 6-pounder Anti-Tank Gun.
Photographs of some events in wartime Northern Ireland on 8th October 1941 and 1942 taking place in Larne and Randalstown in Co. Antrim, and across Ulster.
9th October marks two plane crashes in Northern Ireland - a Spitfire in the hands of a Polish pilot in 1943, and that of a Corsair in Lough Foyle in 1944.
On 10th October 1944, Sub-Lieutenant R.J. McHaffie of No. 1843 N.A.S. fatally crashed Vought F4U-1 Corsair JT479 off the coast of Castlerock, Co. Londonderry.
On 11th October 1941, Lieutenant General Harold Edmund Franklyn (General Officer Commanding British Troops in Northern Ireland) posed for a series of portraits.
On 14th October 1941, British troops took part in a training exercise near Coleraine. The following year would see a royal visitor journey throughout Ulster.
On 15th October during various years of the Second World War, Northern Ireland played host to training troops, international cricketers, and royal visitors.
On 16th October 1942, Her Royal Highness The Princess Royal inspected members of 59th Division Signals during her short royal visit to Northern Ireland.
On 17th October 1941, an Anti-Tank Battery took part in a training exercise with the 'Battery H.Q.' at a rural farmhouse near Lislap House, Gortin, Co. Tyrone.
18th October 1941 saw a Reconnaissance Battalion train in Co. Armagh while two years later, another contingent of U.S. Forces landed at the docks in Belfast.
On 20th October 1941, the Inland Water Transport patrolled Lough Neagh, while in 1942, ongoing work continued on the new jetty at Larne Harbour in Co. Antrim.
On 22nd October 1941, Staff Sergeant Major Mabel Kathleen Twist took part in a parade at the Northern Ireland District H.Q., Auxiliary Territorial Service.
On 24th October 1943, an exhibition took place in Northern Ireland. It demonstrated uses for salvage materials in the war effort including metals and paper.
On 25th October 1943, the Director General of the Home Guard inspected a Cadet Battalion of the Royal Ulster Rifles at the Royal Belfast Academical Institution.
On 26th October 1942, Lieutenant J.R. Bainbridge photographed members of the Royal Army Service Corps carrying out daily activities at a depot in Belfast.