Sidney Maskell Dicker was born in Brixton, in October 1886, and he and his sister May were brought up by his mother Louisa Dicker, and uncle Charles Maskell. He married Dora Edith Jane Read in October 1909, living in Grenfell Road, Mitcham, and they had 2 children Sidney Charles Maskell Dicker (b. 1910) and Muriel Ethel Dicker (b.1914).

Only 5ft 2ins tall, he enlisted into the 18th (Service) battalion (Arts and Crafts), service number C/6803, on 10th August 1915. The battalion embarked for France on 10th May 1916, landing at Le Havre. On 15th September the battalion suffered very heavy casualties during the first day of the Battle of Flers-Coucelette, part of the Somme offensive, Rifleman Dicker being amongst them, age 29.

His wife and children moved to Thame shortly after his death, living at 46 Chinnor Road for a number of years. His son Sidney Charles Maskell Dicker went on to become a teacher, and then a Captain in the Wiltshire Regiment, and was killed in Normandy in 1944.

Rifleman Sidney Charles Dicker is buried in Bulls Road Cemetery, Flers, France, and is remembered in Thame on the War Memorial.