The Extension was used by fighting units and Field Ambulances from August 1915 to November 1916, and more particularly in and after September 1916, when Field Ambulances were concentrated at Albert. From November 1916, the 5th Casualty Clearing Station used it for two months. From March 1917, it was not used (except for four burials in March, 1918) until the end of August 1918, when Plot II was made by the 18th Division.
During the Second World War the extension was used again, when the French moved into it British casualties from isolated graves in and around Albert.
There are 863 First World War and 25 Second World War casualties commemorated in this site. Of these, 12 First World War casualties and 8 Second World War casualties are unidentified. Five graves, destroyed by shellfire, are now represented by special memorials. Two soldiers known to be among the casualties buried here, but whose graves could not be identified, are commemorated by special memorials, inscribed, “Known to be buried in this cemetery”.