As a correspondent of "The Times" in Constantinople from 1908 to 1914, he reported on the events preceding World War I. In 1914, as a British citizen, he had to leave the Ottoman Empire due to the war. In 1915–1919, he served in the British Army in the Middle East war theatre. As a captain in Army Intelligence in Cairo he worked with T. E. Lawrence on the " Turkish Army Manual " for the Arab Bureau. His uncle Sir Robert Windham Graves had been British Consul in Erzurum (1895) and financial adviser to the Turkish government (1912) and worked for Civil Intelligence in Cairo during the same period.