It continued to be used until March 1918 and contains a total of 724 graves .
Of the 25 British war cemeteries dating from World War I , one of the six largest was built in Deir al - Balah in March 1917 .
Deir al - Balah continued to be used until March 1918 and contains a total of 724 graves .
Of the 25 British war cemeteries dating from World War I , one of the six largest was built in Deir al - Balah in March 1917 .