This document provides guidance on commissioning programs available to enlisted Navy personnel, including the U.S. Naval Academy, Officer Candidate School, Medical Enlisted Commissioning Program, Medical Service Corps In-service Procurement Program, Limited Duty Officer and Chief Warrant Officer programs, and Seaman to Admiral-21 Program. It outlines eligibility requirements and application procedures for each program. The document cancels OPNAVINST 1420.1A and directs commanding officers to follow the application procedures in the enclosure, which provides a manual on applying for enlisted commissioning programs.