During the First World War, Commonwealth camps and hospitals were stationed on the southern outskirts of Rouen. A base supply depot and the 3rd Echelon of General Headquarters were also established in the city.  Almost all of the hospitals at Rouen remained there for practically the whole of the war. They included eight general, five stationary, one British Red Cross and one labour hospital, and No. 2 Convalescent Depot. A number of the dead from these hospitals were buried in other cemeteries, but the great majority were taken to the city cemetery of St. Sever. In September 1916, it was found necessary to begin an extension, where the last burial took place in April 1920. The cemetery extension contains 8,348 Commonwealth burials of the First World War and 328 from the Second World War. The extension was designed by Sir Reginald Blomfield.