'On This Day' from culturepics.org

THE DEPLOYMENT OF THE BRITISH EXPEDITIONARY FORCE TO FRANCE, AUGUST-OCTOBER 1914
18 August 1914
Imperial War Museum

WAR EXHIBITION AT KNIGHTSBRIDGE, LONDON, AUGUST 1915
18 August 1915
Imperial War Museum

Austria Sammeltag [Austria Collection Day]
18 August 1916
Imperial War Museum

Hesdin type
18 August 1916
Imperial War Museum

Lieutenant Charles Fabian Saunders. Unit: C Company, 7th Battalion, Northamptonshire Regiment. Death: 18 August 1916 Western Front
Died 18 August 1916
Imperial War Museum

Lieutenant F Mackay. Unit: Cameron Highlanders. Death: 18 August 1916
Died 18 August 1916
Imperial War Museum

Lieutenant Thomas Alfred Hooper. Unit: 5th Battalion, Australian Infantry, Australian Imperial Force. Death: 18 August 1916, killed in action at Pozieres, Somme, Western Front. Commemorated on the Villers-Bretonneux Memorial.
Died 18 August 1916
Imperial War Museum

Miss Enid M Kentish, Voluntary Aid Detachments. Died August 1916 18 August 1916.
Died 18 August 1916
Imperial War Museum

Private (Cyclist) Herbert Jackson 1266/225306. Unit: C Company, 5th Battalion, attached to 8th Battalion, East Yorkshire Regiment. Death: 18 August 1916 Western Front
Died 18 August 1916
Imperial War Museum

Private Charles Arthus Levens. Unit: 5th Infantry Battalion, Australian Imperial Forces. Death: 18 August 1916
Died 18 August 1916
Imperial War Museum

Private Joseph Gandell 19059. Unit: 7th Battalion, Northamptonshire Regiment. Death: 18 August 1916, Guillemont, Somme, Western Front. Commemorated on the Thiepval Memorial.
Died 18 August 1916
Imperial War Museum

Private William Cameron S/10244. Unit: 8th Platoon, "B" Company, 2nd Battalion, Argyll and Sutherland Highlanders. Death: 18 August 1916, Somme, Western Front.
Died 18 August 1916
Imperial War Museum

Private William Gilchrist S/10229. Unit: 5th Platoon, "B" Company, 2nd Battalion, Argyll and Sutherland Highlanders. Death: 18 August 1916, Bois des Foureaux, Somme, Western Front. Commemorated on the Thiepval Memorial.
Died 18 August 1916
Imperial War Museum

Pte Oliphant, who had transferred from 11 to 2 Battalion, was reported missing, aged 38, on 18 August 1916 at Longueval during the Battle of the Somme. He is buried at Caterpillar Valley Cemetery, Longueval.
Died 18 August 1916
Imperial War Museum

Second Lieutenant Fitzmaurice Valentine Scoones. Unit: 3rd Battalion, Black Watch (Royal Highlanders). Death: 18 August 1916 Died in training with Black Watch United Kingdom
Died 18 August 1916
Imperial War Museum

Second Lieutenant George Francis Haydon. Unit: "C" Battery, 175th Brigade, Royal Field Artillery. Death: 18 August 1916, missing in action, Somme, Western Front.
Died 18 August 1916
Imperial War Museum

Second Lieutenant George Futvoye Marsden-Smedley. Unit: 3rd Battalion, Rifle Brigade. Death: 18 August 1916 Missing Western Front
Died 18 August 1916
Imperial War Museum

THE ALLIED ARMIES IN THE MACEDONIAN CAMPAIGN, 1915-1918
18 August 1916
Imperial War Museum

AERIAL PHOTOGRAPHY ON THE WESTERN FRONT
18 August 1917
Imperial War Museum

AERIAL PHOTOGRAPHY ON THE WESTERN FRONT DURING THE FIRST WORLD WAR
18 August 1917
Imperial War Museum

Captain William Hope Walker. Unit: Royal Flying Corps. Death: 18 August 1917 Missing in Action Western Front
Died 18 August 1917
Imperial War Museum

IWM to Heather, Mrs.
18 August 1917
Imperial War Museum

Lieutenant Reginald Lindsay. Unit: 11th Battalion, Northumberland Fusiliers, transferred to the Royal Flying Corps (on 18 August 1917). Death: not known.
Died 18 August 1917
Imperial War Museum

Major Stewart Hugh Joseph. Unit: Commanding 227th Field Company, Royal Engineers. Death: 18 August 1917 Western Front.
Died 18 August 1917
Imperial War Museum

Rifleman Arthur Thomas Gooch 41840. Unit: 7th Battalion, Royal Irish Rifles. Death: 18 August 1917, missing in action, Western Front. Commemorated on the Tyne Cot Memorial.
Died 18 August 1917
Imperial War Museum

Second Lieutenant George Bernard Hooper. Unit: "D" Company, unknown battalion, London Regiment. Death: 18 August 1917, missing in action, believed to be taken prisoner.
Died 18 August 1917
Imperial War Museum

Second Lieutenant Maurice Nicholson. Unit: Army Cyclist Corps, General List, attached 11th Squadron, Royal Flying Corps. Death: 18 August 1917 Missing in action Western Front
Died 18 August 1917
Imperial War Museum