- This article deals with the rank used in the MACOs and Marines. For a similarly named Starfleet rank, see lieutenant.
Second lieutenant is the lowest officer rank used by the MACOs and Federation Marines, superior to enlisted grades and subordinate to first lieutenant and captain. A second lieutenant commands a platoon, about 30 troops.
- MACO lieutenants did not appear in Star Trek: Enterprise to avoid audience confusion over rank names.
This rank is also used in the Bajoran Militia and other armies. (DS9)