The Starfleet Marine Corps Twentieth Brigade
was a Starfleet Marine Corps
element active in the late 24th century
The 20th Brigade consisted of one known battalion that included the 369th Marine Strike Group and the 381st Marine Strike Group.
Until late 2384, the 20th Brigade's OIC was Brigadier Marie Wilson.
The 20th was also an element of the Starfleet Marine Corps of Starfleet International. Its jurisdiction corresponded to Region 20, the fan club analogue of the Starfleet Twentieth Fleet.