Crimson Command was a government created by Merak Vylanthor, a former admiral in the Imperial Navy, after the Battle of Endor in 4 ABY. It was one of the first of the many warlord kingdoms that the Galactic Empire fractured into following the deaths of Emperor Palpatine and Darth Vader. Vylanthor was the leader, declaring himself Lord High Admiral.
The faction controlled the Sarin sector, and was a brutal regime, killing thousands. The New Republic destroyed the faction in 7 ABY.