 And 2,227 Māori served in the war; about 4.5% of the Māori population or under half of the total contribution per head of the total New Zealand population.New Zealand Hospitals were set up at Port Said and Suez in 1915, Walton-on-Thames in 1915, and Amiens, Brockenhurst, Codford and Hornchurch in 1916.Hospital ships Maheno and Marama were converted in 1915.