Senior Apprentice

Apprentice is the second lowest enlisted rank in the Sci Corps and Public Health Corps. As an Apprentice, they are sent to their first duty station and their receive on the job training for any tasks that they might be assigned to do.

Senior Apprentice is one rank above Apprentice and one rank below Tech Third Class. The Usual time in rank for an Senior Apprentice to be promoted to Tech Third Class is 10 months, provided the individual reenlists prior to that time.