US Military Bases on Guam in Global Perspective

Officially, as of late 2008 (the last date for which the DoD has made such data public) over 150,000 troops and 95,000 civilian employees are massed in 837 US military facilities in 45 countries and territories, excluding Iraq and Afghanistan. There, the US military owns or rents 720,000 acres of land, and owns, rents or uses 60,000 buildings and manages structures valued at $145 billion. 4742 bases are located in the domestic United States. These official numbers are quite misleading as to the scale of US overseas military basing, however. That is because they not only exclude the massive buildup of new bases and troop presence in Iraq and Afghanistan, but also secret or unacknowledged facilities in Israel, Kuwait, the Philippines and many other places.
http://www.japanfocus.org/-catherine-lutz/3389