Netley Hospital, Southampton was a military hospital during World War 1, the main hospital had been expanded considerably to cope with causalities from the front. At it's peak had over 2,500 beds and an estimated 50,000 patients were treated at the hospital during the war.
This unique picture of World War 1 soldiers and a banner which has Power House Camp - Netley Light Infantry - (power hose probably referring to the electricity/gas supply).
click to enlarge photo above