Mubarak Al-Sabah cavalry commander of the Military of Kuwait in many operations, including several Ottoman campaigns; most notably: 1871, 1892, and 1894 campaigns into Hasa, Qatar, and southern Iraq. For his long service Mubarak received the title istabl-i amire payesi, “(Rank of) The Grand Equerry of his Imperial Majesty” in August 1879 for a campaign into Qatif and southern Iraq. He was given four more Ottoman honors as reward for his services in the Qatar campaign, though the value of his contributions are disputed. Although Mubarak was widely known for his ties with the British after his ascension to sheikhdom in 1896,
Anglo-Ottoman Convention of 1913 intervene in matters of the Gulf, of which the British desired to retain a monopoly. The Ottomans were willing to drop all claims to Bahrain, in which they had never been able to maintain anything but a symbolic role, but not Qatar. As a question of sovereignty, the Ottomans argued that the empire had always exercised effective sovereignty over the peninsula and could not justify the abandonment of territory which it had never formally renounced. Yet under considerable pressure it renounced claims to both (Articles 11 & 13) and a blue line was established to define the territorial limits of