 Complete the following phrase:  Douglas served in the Second Boer War from 1899 until early 1901. He was initially Assistant Adjutant-General on the Headquarters staff in South Africa from 9 October 1899, then served as ADC and Chief of Staff to Lord Methuen, the General Officer Commanding 1st Division. It was in this role he took part in the Battle of Modder River November 1899 and the 