Between the years of 3973 BBY and 3965 BBY, in the initial years of the Mandalorian Wars, the Galactic Republic and the Mandalorian Neo-Crusaders clashed in a battle within the Sy Myrth system. Following a similar outcome in the Jaminere system, the Sy Myrth star system confrontation resulted in a victory for the Mandalorians, who subsequently raided the Taskeed system.
The Daniel Wallace and Jason Fry penned The Essential Atlas, released in 2009, makes reference to the battle that occurred in the Sy Myrth system. It was only identified on the galaxy-wide map depicting the Mandalorian Wars, with no accompanying textual description.