What should a Marine do if permission to debark is granted?

When permission to debark is granted, the appropriate action for a Marine is to step onto the gangway. This action signifies that the Marine is following orders and proceeding to disembark as instructed. It is important for Marines to maintain proper procedures when transitioning from one location to another, and stepping onto the gangway is often the first physical step in that process.

This action reflects a disciplined approach to movement and establishes a clear sequence of events when leaving a vessel, ensuring that each Marine does so in an orderly fashion. It is essential for maintaining decorum and structure within military operations, as following the proper protocol enhances safety and efficiency during debarkation.

While reporting to the commanding officer or saluting is important in various contexts, the immediate action upon receiving permission is to step onto the gangway. Remaining on the ship until called is not appropriate following the granting of debarkation permission, as it would go against the directive given.