'On This Day' from culturepics.org

THE RETREAT FROM MONS, AUGUST-SEPTEMBER 1914
15 April 1914
Imperial War Museum

Captain Francis Lloyd Dyer. Unit: 93rd Burma Infantry, Indian Army. Death: 15 April 1915 Mesopotamia, missing in action. Son of John and Grace Dyer.
Died 15 April 1915
Imperial War Museum

Captain William Leonard Reid. Unit: 2nd Battalion, Dorsetshire Regiment. Death: 15 April 1915 Shaiba Mesopotamia
Died 15 April 1915
Imperial War Museum

Lieutenant Colonel Thomas Xavier Britten MID. Unit: 2nd in Command, 110th Mahratta Light Infantry, Indian Army. Death: 15 April 1915 Shaiba Mesopotamia
Died 15 April 1915
Imperial War Museum

Second Lieutenant Arthur Cyril Brickwood. Unit: 1st Battalion, York and Lancaster Regiment. Death: 15 April 1915 France Western Front. Son of Sir John and Lady Brickwood, of Hindhead and Portsmouth.
Died 15 April 1915
Imperial War Museum

Second Lieutenant John Nisbet. Unit: 3rdBattalion, attached 2nd Battalion, Royal Scots (Lothian Regiment). Death: 15 April 1915 Killed in action Western Front
Died 15 April 1915
Imperial War Museum

THE GALLIPOLI CAMPAIGN, APRIL 1915-JANUARY 1916
15 April 1915
Imperial War Museum

BRITISH OFFICIAL PANORAMAS OF THE WESTERN FRONT 1914 - 1918
15 April 1916
Imperial War Museum

BRITISH SHIPS OF THE FIRST WORLD WAR
15 April 1917
Imperial War Museum

Captain Theodore Anthony Brown. Unit: B Company, 3rd Battalion, attached to 1st Battalion, The Buffs (East Kent Regiment). Death: 15 April 1917.
Died 15 April 1917
Imperial War Museum

Corporal Edwin Jordan 79. Unit: B Company, 4th Battalion, Australian Imperial Force. Death: 15 April 1917 Western Front.
Died 15 April 1917
Imperial War Museum

Lance Corporal John W McQuarrie 5858. Unit: C Company, 17th Battalion, Australian Imperial Force. Death: 15 April 1917 Western Front
Died 15 April 1917
Imperial War Museum

Mrs Sarah Cooper, Munitions work. Died of amatol poisoning 15 April 1917.
Died 15 April 1917
Imperial War Museum

OFFICIAL VISITS TO THE WESTERN FRONT, 1914-1918
15 April 1917
Imperial War Museum

Private James Hickey 69. Unit: "D" Company, 12th Battalion, Australian Imperial Force. Death: 15 April 1917, killed in action, Western Front. Commemorated on the Villers-Bretonneux Memorial.
Died 15 April 1917
Imperial War Museum

Second Lieutenant Arnold Firth. Unit: 3rd/7th London Brigade, Royal Field Artillery, attached to "C" Battery, 291st Brigade, Royal Field Artillery. Death: 15 April 1917, Western Front.
Died 15 April 1917
Imperial War Museum

Sergeant George Kirkpatrick MM 934. Unit: 17th Battalion, Australian Imperial Force. Death: 15 April 1917 Western Front. Son of Hugh and Mary Kirkpatrick, of West Kempsey, New South Wales. Born at Armidale.
Died 15 April 1917
Imperial War Museum

Captain Donald Francis Neilson DSO MC. Unit: 3rd Battalion, Lincolnshire Regiment. Death: 15 April 1918 Killed in action Western Front
Died 15 April 1918
Imperial War Museum

Dresdner Windelwoche [Dresden Nappy Week]
15 April 1918
Imperial War Museum

Private Elias Edgar Isaacs 51543. Unit: B Company, 2nd Battalion, Worcestershire Regiment. Death: 15 April 1918 Western Front. Son of Mr. and Mrs. Charles Isaacs, of The Duke of York, Berger Rd., Homerton, London.
Died 15 April 1918
Imperial War Museum

Private George Francis Bocock 19491. Unit: A Company, 1st Battalion, Royal Warwickshire Regiment. Death: 15 April 1918
Died 15 April 1918
Imperial War Museum