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The regimental War Diaries are held at The UK National Archives and as of April 2020 have been made available for free download*. They are the official unit war diaries for the British Army that contain records of daily activities, including casualties. They are not personal diaries.
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Serjeant Mark Smith
The Queen's (Royal West Surrey Regiment)
Date of death: 21/10/1914 (aged 29)
Cemetery: YPRES (MENIN GATE) MEMORIAL
Husband of Alice Dorothy Smith, of Park Farm Bungalow, Langham Lane, Colchester.
Private Frederick Smith
East Surrey Regiment
Date of death: 25/09/1916 (aged 31)
Cemetery: THIEPVAL MEMORIAL
Son of Henry Smith; husband of Nellie Smith, of Causeway, Great Horkesley, Essex.