“ Warburton entered the Royal Artillery in 1861, took part in the Abyssinian War of 1867-68, and then joined the Bengal Staff Corps. He served with distinction in the expedition against the Utman Khel in 1878 and in the Afghan War of 1878-80. Very soon after the British government had made permanent arrangements for keeping open the Khyber Pass, Warburton was appointed to take charge of it as political officer. ”