 Meanwhile, the 1st Bengal Infantry was redesignated as the 1st Brahmans.During the First World War, except for the 1st Brahmans, all battalions of the regiment served in the Mesopotamian Campaign, while the 62nd and 76th Punjabis also served at Suez Canal during the Turkish offensive of 1915.Captain Claude Auchinleck, later Field Marshal and the last Commander-in-Chief of the British Indian Army, served with the 62nd Punjabis in Egypt and Mesopotamia.