 In December, the battalion was present at the Battle of Magersfontein, and the following year took part in the march to take the Boer capitals of Bloemfontein and Pretoria.After taking the latter city, the 1st Guards Brigade took part in the Battle of Diamond Hill (June 1900), and in the last large scale battle of the war at Bergendal in August 1900.The war then became a guerrilla war, and Lowther was on 20 July 1901 appointed to a staff position as Staff Captain for Intelligence.