squadron Flotilla, Squadron......

Air Squadron was created in 1966.

Jefferson Davis, as Commander in Chief of the Confederacy was also the Commander of the Confederate Navy, but he didn't lead any Naval squadron.

Squadron is a military unit; an operational unit in an air force consisting of two or more flights of aircraft and the personnel required to fly them; principal division of an armored or cavalry regiment, consisting of two or more troops.

In reality nothing. But technically a naval station is on the water with ships, but a navy base is any navy base. Including a naval air station which can be anywhere but specialized in air based defense.