How did the military split off into different branches?

I'm curious if any one knows the history of how the military branched off into different services, such as the Army, Navy, Airforce and marines.|||The Army was established June 14th, 1775. The Navy was on October 13, 1775 and the Marines Nov 10, 1775 as the Landing Force of the Navy, but became a separate service in 1798. The Air Force is the youngest branch as it was establish in 1947. It was before known as the Army Air Corp|||For your information BEE, the Army National Guard was formed before the US Army. Your information obviously was not researched very well!|||The armed forces grew as time went on. There has always been a ground-fighting force known as the "army". (Think about ancient Rome, etc.) The Navy is another very old military force - it had specialists in celestial navigation and the handling of seagoing craft in both peace and wartime. One of the big changes in the Navy came during the American civil war, when the seacraft changed to iron instead of wood.





The advent of airplanes added to the Army Corps. During World War II, these aircraft were the harbingers of technology that won the war.





Airplane technology and advances changed so much that a new branch called the "air force" was created and dedicated to this flying warfare.





The Marine Corps grew out of a need for a specially skilled group of people who could put land, sea and flying skills together. This took a great deal of ability and energy, and still does.





They all evolved with different purposes as needed.





You get a star for your question- it is a good one.|||It didn't branch. The U.S. Army was first established then the other ranks came later. Also all elements are together and equal on every joint command station.|||When America was first getting organized as a country they modeled their military after the British. Establishing a Army, Navy, and Marine Corps just like the British had that they would soon be fighting against.


When aircraft first were used in war during WWI they belonged to the Army and an Army Air Corps was established. After WWII Congress decided the Air Corps had gotten to big and established the Air Force to releive the Army of responsibility for the Air Corps.|||The US inherited it's military history from Europe. First there were armies of foot soldiers and calvary. Then sailing ships became armed creating a Navy. Soldiers based on ships were called Marines.





The Air Force started out as the Army Air Corps as the US Army was the first to purchase airplanes from the Wright Brothers. Following WWII, it was split off into it's own branch, the US Air Force.