Budget: $601 billion
Active frontline personnel: 1,400,000
Total aircraft: 13,892
Despite sequestration and other spending cuts, the United States spends more money — $601 billion — on defense than the next nine countries on Credit Suisse's index combined.
America's biggest conventional military advantage is its fleet of 10 aircraft carriers. In comparison India, which is constructing its third carrier, has the second-most carriers in the world.
The US also has by far the most aircraft of any country, cutting-edge technology like the Navy's new rail gun, a large and well-trained human force — and that's not even counting the world's largest nuclear arsenal.