If the U.S. were to cut its military budget by 75% it would still have the world's largest military budget.

If the U.S. were to cut its military budget by 75% it would still have the world’s largest military budget.

The top 5 largest military budgets, in US dollars:
1. United States – 801 billion
2. China – 293 billion
3. India – 76.6 billion
4. United Kingdom – 68.4 billion
5. Russia – 65.9 billion

China has the largest military based on active personnel
Vietnam has the largest military based on active personnel and reserves
The United States has the largest military budget at 801 billion US dollars
The United States has the most powerful military in the world

Source