 Ramba uchiverenga ndima ino - Muna 1899, Holmes akazvipira kunoshanda kuSouth Africa. Kambani yakaenda kuSouth Africa munaNovember 1899, uye pakusvika yakabatanidzwa muAustralia Regiment. Pakutanga raiva boka revarwi vaifamba netsoka, asi muna February rakava boka revarwi vaifamba nemabhiza. Akaona chiito paColesberg, Pretoria uye Diamond Hill muna June 1900, kwaakakuvadzwa. Holmes akanongedzerwa mumashoko, akasimudzirwa kuva mukuru mukuru, uye akapiwa Distinguished Service Order DSO. Akadzokera kumusha muna August 1900. 