Recruit

Recruit was a title given to recently joined members of Earth Starfleet. Many recruits received their training at Starfleet Command, where they would walk past pictures of famous Starfleet captains. 

Travis Mayweather was a recruit in the late 2140s. 

In 2153, Captain Jonathan Archer likened Commander Charles Tucker's recent behavior regarding a Vissian cogenitor to the actions of a "first-year recruit." 

Rekrut