11 large nuclear-powered fleet carriers carrying around 80 fighters each. the US Air Force is the largest aviation force in the world, followed by the US Navy's fleet of approximately 3,700 aircraft. With over 280 ships ready to be deployed, i am always prepared to defend. US military has approximately 5,500 tanks in its arsenal, boasting one of the largest tank fleets in the world. From the iconic M1 Abrams to the versatile M2 Bradley, each tank is well built and very strong.