After the outbreak of the Second Boer War in October 1899, his battalion was sent to South Africa. They were part of large force sent to relieve the Siege of Kimberley, and took part in the Battle of Magersfontein on 10–11 December 1899, in which the defending Boer force defeated the advancing British forces amongst heavy casualties for the latter. Towse was mentioned in the despatch from Lord Methuen describing the battle.