With its commander and four of its companies under siege in Kimberly, the balance of the 1st Battalion served with Lord Methuen. Together with the 1st Northumberland Fusiliers, 2nd Northampton Regiment, and 2nd King's Own (Yorkshire Light Infantry), they formed the 9th Brigade of the 1st Division. They served with 9th Brigade at the Battles of Belmont, Modder River and Magersfotein.