eli5: Why does the US Military have airplanes in multiple branches (Navy, Marines etc) as opposed to having all flight operations handled by the Air Force exclusively?

Question

eli5: Why does the US Military have airplanes in multiple branches (Navy, Marines etc) as opposed to having all flight operations handled by the Air Force exclusively?

In: Other

Answer 1

Air Force primary uses airplanes as weapons.
Navy uses airplanes as ship launched weapons.
Army uses aircraft as support weapons for ground troops.

Also all the forces coordinate and cooperate to use the most capapale asses at any given time.

Navy can operate fighter jets anywhere in the world, army can operate aircraft in much more adverse conditions