The history of the United States Armed Forces spans over two centuries. The United States rapidly evolved from being a new nation fighting for independence against Great Britain between 1775 and 1783, to fighting in the landmark American Civil War from 1861 to 1865, to proving their valor and strength during World War II, and finally emerging as a world superpower towards the end of the 20th century. The U.S. armed forces comprise five branches of the military: the Army, Air Force, Navy, Marine Corps, and Coast Guard. 

The origin of the United States Army dates back to 1775 when the Continental Congress established the Continental Army, Continental Navy, and Continental Marines, commanded and led by General George Washington. This newly assembled military force fought the British during the American Revolutionary War with French soldiers by its side, leading to the Treaty of Paris and its independence. In 1789, the new Constitution delegated the president as the commander in chief of the military, with the authority to create laws, levy taxes, and declare war. 

Ever since its formation, the primary responsibility of the Army division of the Armed Forces is to fight battles on land and deploy the military for takeover. The United States Army Corps of Engineers mainly control the rivers of inland America. Following the war against the British Army, the U.S. Army was still relatively small and operating in peacetime. This changed in the 1940s when the Air Force became a completely separate unit outside of the Army Air Forces. In 1947, control of the U.S. Army switched over from the War Department to the Defense Department. 

The major wars that the U.S. Army participated in were the Indian Wars of the 1790s, the War of 1812, the American Civil War in 1861, the Spanish-American War of 1898, World Wars I and II in 1917 and 1941 respectively, the Korean War in 1950, and the Vietnam War in 1965. The U.S. military also took part in the Gulf War in 1991 and the war in Afghanistan. 

As of 2019, the Armed Forces of America fall under the command of the Department of Defense and the Coast Guard, which is authorized by the Department of Homeland Security.

According to Source of photos: internet