Japan
Technically, this military is not military at all. They're referred to as a "self-defense force" because Japan is prevented from having an army due to the outcome of World War II. This renaming loophole allows the country to at least have a defense set up, should they ever need it. Sneaky...
The United Kingdom
This kingdom certainly has to be pretty united in order to protect its citizens. The country has a massive budget, especially in comparison to other smaller nations--$62 billion dollars! In the possession of the country is also 879 aircraft, 407 army tanks, and 66 naval sea vessels.