Vietnam
What this country might lack in some areas, they make up for in their astronomical reserve numbers. It's estimated that over 5 million people are ready to serve their country at any time, alongside helpful combat tools such as the 1,829 combat tanks, 189 jets, 8 submarines, and 5 warships in the nation's possession.
Indonesia
The 476,00 active soldiers and additional 400,000 reserves are all dedicated to the Indonesian Armed Forces. With numbers like these, it's easy to see why they are so feared. The nation has been known for its impressive military capability since the colonial era, and they've only continued to grow every year.