South Korea
With North Korea right over the border, backed by China from the north, the South Korean Army trains like they have nowhere to hide… because they don’t. Their defense spend is $34-billion. For such a small nation, they have a large army, 640,000 active and 2.9 million reserves. Training for these troops compares to the training received by U.S. forces. In fact, the two armies often train together. To back up those forces, they have over 2,300 tanks and almost 1,400 aircraft.