Nav. rank

ENS

It’s the lowest officer rank in the Navy, often held by new graduates.

"Nav. rank" is short for "naval rank," which hints at a military title in the navy. The answer "ENS" stands for Ensign, the lowest commissioned officer rank in many navies, including the U.S. Navy. The clue uses an abbreviation to keep it concise, a common trick in crosswords to fit shorter answers. If you’ve seen naval dramas or know military ranks, this one’s a straightforward reference.