Ypres Count of Flanders (1305–1322). The Menin Gate Memorial to the Missing commemorates those soldiers of the British Commonwealth – with the exception of Newfoundland and New Zealand – who fell in the Ypres Salient during the First World War before 16 August 1917 and who have no known grave. United Kingdom and New Zealand servicemen who died after that date are named on the memorial at Tyne Cot, a site which marks the furthest point reached by Commonwealth forces in Belgium until nearly the end of the war. Other New Zealand casualties are commemorated on memorials at Buttes New British
Ploegsteert Memorial to the Missing action took place. Allied units were sent here to recuperate and retrain after fighting elsewhere and before returning to active operations. Berks Cemetery Extension was founded by Commonwealth troops in June 1916 as an extension to Hyde Park Corner (Royal Berks) Cemetery which lies across the road. The cemetery grounds were assigned to the United Kingdom in perpetuity by King Albert I of Belgium in recognition of the sacrifices made by the British Empire in the defence and liberation of Belgium during the war. The Ploegsteert Memorial to the Missing is one of several CWGC Memorials to the Missing along