Ensign (Abbreviated to Ens) is the most junior commissioned officer rank, above all enlisted personnel and Warrant Officers and below Lieutenants (JG). Ensigns have only been out of the Academy for a short time, and as such have the least amount of responsibility of all officers. Ensigns generally serve in relief or assistant capacities in most departments. It is rare - but not unheard of - for a cadet at Starfleet Academy to be granted a temporary commission as an ensign. This, however, is only done in instances of truly outstanding grades. Officers typically spend around three years as an Ensign.