India India has put its massive population to use, and built an army of a sizeable 3.5 million, including 1.325 million active military. The huge size of the Indian military is one of the reasons why it has always remained among the countries with best armies in the world. The man force of the army is complemented by almost 16,000 land vehicles which include 3,500 tanks, as well as 1,785 aircraft, alongside nuclear weapons.