Elverdinge remained throughout the war behind the British front line, and Hospital Farm and Ferme-Olivier Cemeteries, both in the commune, were used in the earlier years for British burials. Hagle Dump was a dump just over 3 kilometres South-West of Elverdinge village, and the cemetery was begun there in April 1918, during the Battles of Lys. It was used by fighting units and Field Ambulances until the following October; and after the Armistice was enlarged by the concentration (into Plots III and IV) of graves from the battlefields of the Salient. The graves of 26 American soldiers, who fell in July-September 1918, and two French soldiers were removed to other burials grounds.
There are now over 400, 1914-18 war casualties commemorated in this site. Of these, nearly a third are unidentified. The cemetery covers an area of 1,818 square metres and is enclosed by a red brick wall. Brielen Military Cemtery, from which 20 British graves were brought to Hagle Dump Cemetery, was close to the South side of Brielen village. It was used from April 1915 to September 1917, and it contained the graves of 31 French soldiers, 16 from the United Kingdom and four Canadian.
Burials (Commonwealth War Graves Commission):
- United Kingdom: 397
- Canada: 14
- Australia: 26
- Total Commonwealth: 437
- Other Nationalities: 2