Was at Ladysmith when war broke out (see notes under 21st Battery, 1st Devon, and 1st Liverpool Regiment). The battery's work at Elandslaagte, Rietfontein, and during the siege was most highly praised. The 42nd was part of the usual garrison of Caesar's Camp, and was very heavily engaged on 6th January 1900. Major Goulburn was mentioned in both of the despatches of 2nd December 1899 and 23rd March 1900, and 1 other officer, 4 non-commissioned officers, and 1 man in the latter. The good work of the battery at Bergendal, 27th August 1900 (see 2nd Rifle Brigade), was acknowledged in General Buller's despatch of 13th September, and in his final despatch 1 officer and 2 non-commissioned officers were mentioned. The battery continued to operate in the Eastern Transvaal.