Following extracted from Commonwealth War Graves Commission website:
CORPORAL LESLIE CHARLES LONG, Service Number: 6019123
Regiment & Unit/Ship: Special Air Service Regiment, A.A.C. B Sqdn., 1st
Date of Death: Died 07 July 1944, Age 26 years old
Buried or commemorated at ROM COMMUNAL CEMETERY, Mil. Plot. Row 1. Coll. grave 1-26. France
Country of Service: United Kingdom
Additional Info: Son of Charles Percival and Harriet Mary Long; husband of Lilie Eileen Long, of Forest Gate, Essex.
Note:
1. Abbreviation A.A.C. = Army Air Corps.
2. Rom Communal Cemetery -
https://www.ww2cemeteries.com/rom-communal-cemetery.htmlSee penultimate row of headstones, far right image, his headstone is situated 2nd left. Also see memorial plaque titled "Les Chemins de La Liberte" which contains more information.