Military Assault Command Organization


 * "Semper invictus" - Latin motto meaning "forever invincible" used by MACO.

Military Assault Command Operations (commonly abbreviated as MACO and alternately called Military Assault Command Organization) were a United Earth military organization in the early and mid 22nd century.

In 2153, General George Casey, at the request of Starfleet Captain Jonathan Archer, assigned a detachment of MACO troops, commanded by Major Joss Hayes, to the starship Enterprise for its mission into the Delphic Expanse. 

Since the Earth Starfleet was not a military organization, MACO troops were used to fulfill any military functions needed aboard Earth Starfleet vessels. It is unknown what happened to the MACO corps after the formation of the Federation, although they were most likely absorbed into the Federation Starfleet (possibly as a 'Starfleet Marine Corps').

There were MACO posts in the city of Atlanta and the Janus loop. One of their training posts was at West Point in New York. In 2155, during the Earth-Romulan War, the Military Assault Command Operations were heavily involved in the ground scale engagements against the Romulans. They were known to have suffered losses at Deneva and Berengaria VII by sneak attacks from the Romulan Star Empire. Due to Starfleet's limited number of ships, there were fears on how to get MACO troopers to the front lines without adequate ship support. 

MACO personnel

 * Hideaki Chang
 * Selma Guitierrez
 * Joss Hayes
 * Nelson Kemper
 * Palmer