[6] The Ottomans maintained a military presence in Qatar until August 1915 and Sheikh Abdullah bin Jassim Al Thani signed the Anglo-Qatari Treaty on 3 November 1916.

Sheikh Abdullah was the Qatari ruler from 1913 to 1949 and is one of the few, including Queen Wilhelmina of the Netherlands, whose tenure extended through both world wars (1914–1945).

[8] The permanent constitution of the state of Qatar published in 2005 dictates that the rule is hereditary and limited to descendants of Hamad bin Khalifa Al Thani.

[10] Sheikh Tamim bin Hamad Al Thani was commissioned as a second lieutenant in the Qatar Armed Forces upon graduation from Sandhurst.

[11] He became the heir apparent to the Qatar throne on 5 August 2003, when his elder brother Sheikh Jassim renounced his claim to the title.