Did you know the Navy has a birthday? October 13 is the Navy’s birthday. The Navy was established during the Revolutionary War, but it was disbanded and then re-established around 10 years later. The United States Navy is the largest navy in the world, with the highest combined battle fleet tonnage. The U.S. Navy also has the world’s largest aircraft carrier fleet, with over 300,00 active personnel and almost 100,000 in Ready Reserve. This October 13, celebrate the Navy’s birthday!