his return to India in April 1869, he was attached as a probationer to the 15th Ludhiana Sikhs, and in July 1870 he was appointed to the Punjab commission as an assistant commissioner to the Peshawar division. At the end of September 1872, he was removed temporarily to the sub-district of Yusafzai and stationed at Hoti-mardan, and in February 1876 he was permanently appointed. Under Sir Pierre Louis Napoleon Cavagnari, he took part in several enterprises against the hill tribes who persisted in raiding British territory, particularly against the Utman Khel in 1878, and was five times complimented by the government of the Punjab and thrice by the secretary of state for India. In 1879, during the Afghan campaign, Cavagnari made repeated applications for his services, but the Punjab government refused to spare him. In July, however, he was appointed political officer of the Khyber, a post which he held for eighteen years. On the news of the murder of Cavagnari at the Siege of the British Residency in Kabul, Warburton was nominated chief political officer with General Sir Robert Onesiphorus Bright, commanding the Jalalabad field force. He joined the force on 10 October, and proceeded to Jalalabad to ascertain the revenues of the district. In April 1880, he was invalided to England, and he did not return to the Khyber Pass until 16 February 1882. From that time he remained on the frontier almost continuously until his retirement. He obtained a remarkable influence over the hill tribes, perhaps in part due to his Afghan blood. He raised the Khyber Rifles from among these tribes, a force which for many years kept the pass tranquil. His camp became the rendezvous of mutually hostile tribesmen, who carefully refrained from hostilities so long as they remained within its precincts. He was accustomed to travel with no weapon but a walking-stick, and everywhere met with demonstrations of attachment. Able to converse fluently with the learned in Persian and with the common folk in the vernacular Pushto, he succeeded, by his acquaintance with tribal life and character, in gaining an influence over the border Afghans which has never been equalled. In 1881, he attained the rank of major, and in 1887 that of lieutenant-colonel. On 1 January 1890, in recognition of his services, he was created C.S.I. In 1893, he was nominated to the brevet rank of colonel. He resigned his post on 11