The answer to the crossword for the term NAVAL SUBORDINATE: ABBR. is ENS, which stands for Ensign. An Ensign is a junior commissioned officer in the United States Navy, Coast Guard, Public Health Service Commissioned Corps, and National Oceanic and Atmospheric Administration Commissioned Officer Corps. It is the lowest rank of commissioned officer in the US Navy and Coast Guard, and is equivalent to a Second Lieutenant in the Army or Marine Corps.