Many men from Ngāti Kahungunu were among the Māori who enlisted for war. They were organised into the New Zealand (Māori) Pioneer Battalion. The battalion participated in the Gallipoli campaign in 1915 and the Western Front between 1916 and 1918. In January 1918 Paraire Tomoana published the words of E Pari Ra, a piece written for soldiers lost in battle. After the war this tune was adopted by the Royal New Zealand Navy as their official slow march. Other songs composed by Tomoana were Tahi nei taru kino, I runga o nga puke, Hoki hoki tonu mai, Hoea ra te waka nei, Pokarekare Ana, and the haka Tika tonu. The songs have since become treasured anthems of Ngāti Kahungunu, and in some cases were adopted by other iwi due to their wartime popularity.
