U.S. Navy and U.S. Marine Corps aircraft tail codes

Tail codes on the U.S. Navy aircraft are the markings that help to identify the aircraft's unit and/or base assignment. These codes comprise one or two letters or digits painted on both sides of the vertical stabilizer, on the top right and on the bottom left wings near the tip.

Source: Wikipedia — U.S. Navy and U.S. Marine Corps aircraft tail codes (CC BY-SA 4.0)