Based on the US DoD Base Structures Report, list the countries with a US military presences. I listed any country in which the US military owned a building with more than 10,000 sq ft.and have a military presence openly cited. This eliminated quite a number including some I thought obvious.
Countries I could have included if I lowered the criteria -- less than 10, 000 sq. feet, leased not own, or no "active" military: Aruba, Bulgaria, Cambodia, Canada (144 sq foot leased office), Colombia, Costa Rica, Denmark, Honduras (despite a 144 buildings over a 100,000 sq feet, there's no active military -- google tells me there's over 500), Hong Kong (?), Kuwait, Norway, Peru, Singapore, and the UAE. I also did not include various dependencies, eg Diego Garcia, Johnson Atoll, Wake Island, etc.
The term country for Curacao is very misleading similar to how you refer to England as a country. As England is a part of the United Kingdom, Curacao is a part of the Kingdom of the Netherlands or Netherlands for short.
And to hwes: Aruba (another Dutch COUNTRY) also has a military presence.