Japan

The Japanese military is not very large in absolute terms. However, the nation is quite well-equipped. Japan, one of the Axis powers in World War II, hasn't been directly involved in any significant hostilities in recent years.

It has the fourth-largest submarine fleet on the list, according to Credit Suisse. Japan also has four aircraft carriers, although they only have helicopter fleets on board. In terms of attack helicopter fleet size, Japan is fourth behind China, Russia, and the US.

The current budget of Japan is $49.7 billion, and there are 247,000 male and female members of the armed forces. It possesses 678 tanks on the ground and two aircraft carriers, 47 warships, and 22 submarines at sea. It has 606 warplanes in the air.

Budget: $49.7 billion

Active frontline personnel: 247,000

Tanks: 678

Total aircraft: 1,613

Submarines: 22