John Leslie Moore was born in Codnor, Derbyshire. His parents, George and Sarah E. Moore moved to Sedgwick Street and later to  Main Road, Jacksdale. John, known as 'Leslie' was the oldest of ten children comprising Annie Maud, Alfred, Olive, Arnold, Claira, Harvey, Florence Lilian, Grace Eliza and Dorothy Mavis.

L/Cpl Moore enlisted at Nottingham, date unknown but we do know it would have, perhaps, taken a reasonable amount of service for him to attain the rank of Lance Corporal.

Leslie first fought in the Balkans being posted their prior to December 1915.  He was killed in action on Monday 28th May 1917, when taking part in a raid on German Trenches, near Philosophe, in the Loos Salient, France, aged 24 years and is buried at Philosophe British Cemetery, Mazingarbe, Pas de Calais, France.

Commemorated on both the Ironville/Codnor Park and Jacksdale War Memorials.

There is a family grave in St Mary's Church Cemetery, Westwood. His father George died, only six months after his son, on 18th October 1917, aged 53 years. His mother, Sarah Elizabeth died on the 3rd July 1949.