|This article, Parisian Front, was written by Matt-256, but may be used freely by other users even without the author's explicit permission.|
The Parisian Front (also known as the Paris IV Line) was line of defense drawn by the UNSC in the latter stages of the Human-Covenant War. A considerable amount of war materiél was spent in trying to hold that line after the Covenant flooded the Outer Colonies and outermost Inner Colonies following Admiral Cole's presumed death at Psi Serpentis, with the base of operations located on Paris IV. The line fell in 2549, following the Covenant victory at the Siege of Paris IV, allowing the Covenant to make forays deeper into UNSC-controlled space, ever closer to Earth and Reach.
Though almost all colonies in the line were destroyed, there were a few that survived, overlooked by the Covenant in their hurry to wipe out major population centers. Examples include the Eden Asteroid Belt, which continued to be a contested area even until the war ended, as the Covenant were unable to maneuver properly inside to effectively root out the humans, who knew the area inside out and could thus launch effective ambushes and set elaborate traps, winning several considerable victories.