Budget: $601 billion

Active frontline personnel: 1,400,000

Tanks: 8,848

Total aircraft: 13,892

Submarines: 72

Despite sequestration and other spending cuts, the US 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, it 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.