1. 1. The Azores are located between latitude 36º55'43'' N and 39º43'02'' N, and between longitude 24º46'15'' W and 31º16'02'' W. Ponta Delgada is on São Miguel Island, the major city of the Azores archipelago of Portugal. The Azores are nine islands divided in-to three widely separated island groups in the North Atlantic: the eastern group consists of São Miguel, Santa Maria, and the Formigas islets; the central group consists of Faial, Pico, São Jorge, Terceira, and Graciosa; and the northwestern group consists of Flores and Corvo. See "Units Composing, and the Commanding Generals of, the Second Divi-sion-Verdun Operations," in Maj Edwin N. McClellan, The United States Marine Corps in the World War (Washington, DC: Historical Branch, G-3 Division, Headquarters Marine Corps, 1968; revised/reprinted by Marine Corps History Division in 2014), 38.
2. 2. RAdm Herbert O. Dunn letter to VAdm William S. Sims, 14 July 1918, World War I doc-uments collection, Naval History and Heritage Command (NHHC), Washington, DC, ac-cessed 5 October 2020; Joseph C. Sweeney, "Franklin Delano Roosevelt as Lord of the Admiralty 1913-1920," Journal of Maritime Law & Commerce 48, no. 4 (October 2017): 442; and Luís Nuno Rodrigues, ed., Franklin Roosevelt and the Azores during the Two World Wars (Lisbon, Portugal: Fundação Luso-Americana para o Desenvolvimento, 2008).
3. 3. For more, see all entries for Portugal, 1914-1918, Online International Encyclopedia of the First World War (website), accessed 5 October 2020.
4. 4. João Carlos Moreira Tavares, "A defesa de Portugal durante a Grande Guerra. Doutrina e antecedentes históricos," XIII Colóquio de História Militar: Portugal Militar. Da Regen-eração à paz de Versalhes (Lisbon: Comissão Portuguesa de História Militar, 2003), 435-520.
5. 5. Nuno Severiano Teixeira, "Porque foi Portugal para a guerra: os objetivos nacionais e as estratégias políticas," Portugal e a Grande Guerra, Nova História Militar de Portugal, vol. 4, dir. Nuno Severiano Teixeira and Manuel Themudo Barata (Rio de Mouro, Portu-gal: Circulo de Leitores, 2004), 14-34.