TRACKING | MAPPING SOURCES

Lists of U.S. Military Bases Abroad, 1776-2021, (David Vine), American University Digital Research Archive, 2021, https://doi.org/10.17606/7em4-hb13.
BASE STRUCTURE REPORT – FISCAL YEAR 2018 BASELINE, (US Department of Defense), 2018, 204 pages; PDF report of all sites owned/managed by the DoD and their assets; Base Structure report is published yearly by the Office of the Deputy Assistant Secretary of Defense, presenting a snapshot of real property data belonging to the U.S. Department of Defense.
United States Military Bases, infographic map, Civilian Medical Resources Network.
Some Notes About the U.S. Military Bases and Personnel Abroad, (Rémy Herrera, Joëlle Cicchini), Journal of Innovation Economics & Management, 2013; article examining how the network of U.S. military bases and strengths has evolved over the period of 1991-2011 with statistical data, and a brief introduction of history of the U.S. expanding military bases to overseas.
Base-related Data, Okinawa Prefectural Government, Washington D.C. office; page introducing history of U.S. military bases in Okinawa, facilities and areas, issues stemming from bases, and Okinawa’s economy.
US-Japan Military Base Issues: Maps of US Military Bases in Okinawa, George Washington University Library; library guide on locating both electronic and print resources related to the latest US military base issues in Okinawa.
United States Forces Japan, wikiwand; Wikipedia page on the U.S. military command stationed in Japan detailing its history, issues, Status of Force Agreement, and a list of current facilities.
Pentagon Map Shows Network of 29 U.S. Bases in Africa, (Nick Turse), The Intercept, 27 February 2020; article about secret U.S. military bases in African countries including Djibouti, Uganda, Kenya, Gabon, Ascension Island, Ghana, Burkina Faso, Senegal, Niger, Chad, Tunisia, Mali, Cameroon, Libya, Somalia.
2020 East Africa and North and West Africa Counterterrorism Operations - Lead Inspector General Report to the United States Congress, (Lead Inspector General), DoD, DoS, USAID; a quarterly report about U.S. counterterrorism programs in Africa (01 July - 30 September 2020). The Offices of Inspector General of the Department of Defense, Department of State, and U.S. Agency for International Development produce a quarterly report describes the activities of the U.S. government in support of the East Africa Counterterrorism Operation and the North and West Africa Counterterrorism Operation and to promote U.S. government policy goals in Africa.
U.S. Military in Africa, Google Maps, 2019; charting the U.S. military posture in Africa, including bases under AFRICOM, SOCAFRICA, JSOC, USAF, and USN.
A Guide To The Pentagon’s Shadowy Network Of Bases In Africa, (Joseph Trevithick), The Warzone, 16 July 2019; article on the various secret military bases in Africa.
Documents Show Vast Network of U.S. Military Bases in Africa, (Nick Turse), The Intercept, 01 December 2018; article revealing undisclosed/unconfirmed U.S. military bases in Africa by detailing the sprawling network of U.S. military bases in Africa, especially in Niger, Somalia, Kenya, Libya, Tunisia, Djibouti, Cameroon, Mali, and Chad.
Tracing the US Military’s Presence in Africa, (Adam Moore, James Walker), Geopolitics, 20 April 2016; journal article by geographers Adam Moore and James Walker exploring AFRICOM as a geopolitical assemblage with three case studies involving aerial surveillance, logistics infrastructure, and counterterrorism entanglements. 
Airwars, a not-for-profit watchdog that tracks, assesses, archives and investigates civilian harm claims resulting primarily from explosive weapons use in conflict-affected nations including Iraq, Syria, Libya, Somalia and Yemen; leading authority on conflict violence that has monitored more than 30 belligerents across six conflict countries & to date tracked almost 60,000 locally alleged civilian deaths.
Armed Conflict Location & Event Data Project, the Armed Conflict Location & Event Data Project (ACLED); a data collection, analysis, and crisis mapping project (ongoing) of reported political violence and protest events globally, with comprehensive maps & data visualization.
Uppsala Conflict Data Program, Uppsala University Department of Peace and Conflict Research; world’s main provider of data (with interactive, geographic visualization) on organized violence and the oldest ongoing data collection project for civil war (1975-2021). Its definition of armed conflict has become the global standard of how conflicts are systematically defined and studied.
17 Maps of U.S. Military Bases Abroad from "Base Nation", (David Vine), David Vine website
Global Bootprints, (Peter Wall), Geographical Imagination, 4 January 2019; short web article on global conflict & US military mapping.