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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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Captain Gavin Alexander Porter
Royal Flying Corps, 13th Sqdn.
Date of death: 05/12/1915 (aged 24)
Cemetery: ACHIET-LE-GRAND COMMUNAL CEMETERY EXTENSION
Son of Alexander and Hannah Porter, of Kalgoortie, Western Australia.
Private Sidney Cox
Date of death: 26/06/1918 (aged 18)
Cemetery: DERBY (UTTOXETER ROAD) CEMETERY
Son of Lewis and Mary Cox, of 31, Wild St., Derby.