This document summarizes the top 10 most powerful militaries in the world based on their air force, navy, and army. For air force, the US has the largest with over 5,500 aircraft and 330,000 personnel, followed by Russia and China. For navy, the US again ranks first with over 340 ships and 323,700 sailors, followed by Russia and China. And for army, the US is first with over 1.4 million active military and over 8,000 tanks, followed by China and Russia. The document provides key statistics on equipment and personnel for each branch of the top 10 militaries.