On 29 May 1900 Pretoria surrendered to the British commander-in-chief, Lord Roberts. Due to the prevalence of malaria and because the area had become too small, he relocated his headquarters from the vicinity of the Normal College to a high-lying site 10 km south-west of the city – hence the name Roberts Heights. Roberts Heights, a busy military town, the largest in South Africa and resembling Aldershot, soon developed. On 15 December 1938 the name was changed to Voortrekkerhoogte and again to Thaba Tshwane on 19 May 1998.