A hop farm, located about five kilometres from the front, was claimed by the British military and named by them 'Gwalia Farm', after a town in Wales.
A 'Field Ambulance' was first set up in the farmstead from late June 1917.
Following the Third Battle of Ypres, the large-scale Allied offensive in late July 1917, the British expanded the camp into a much larger hospital complex a so-called 'corps main dressing station'.
Those who did not survive were buried on site in the cemetery established at 'Gwalia Farm' in a meadow behind the farm.