On graduating from Annapolis, you become either a Navy ensign or a second lieutenant in this service
Lieutenant William Harwar Parker, CSN, class of 1848, and 
instructor at... [DOC] [TLE] Midshipman - Wikipedia [PAR] A midshipman is an officer cadet or a commissioned officer candidate of the 
junior-most rank, ... Midshipman began to mean an officer cadet at a naval 
college.