The 4th Zerichstaz Infantry

The 4th Zerichstaz Infantry, often shortened to ZI  known as the Unvanquished, was one of the many battalions of the CORE Army. The 4th's regiment headquarters were located in the Duzurig Barracks in southern Baulder. The 4th's most famous members were Silas Soul the 3rd and Mjr. Gary Thornton. The 4th fought in the End War, saw combat during the Invasion of Medikemente, and fought in several battles during Operation Deliverance. One year after Emergence Day, elements of the 4th ZI fought in several battles during the fallback to the McCarthy Plateau. The 4th ZI even had their own regimental museum.

Operation: Deliverance
During Operation: Deliverance, commandos from the unit infiltrated Kurdun Point and captured DNA scientists and information on the Ragnarok, while Howard Company fought at Kurdun Fields to cover their escape. During the battle, half of the commandos were killed, as well as the majority of the soldiers in X Company, including Pvt. Thomas Kennedy Several soldiers in the unit were awarded various medals for their roles in the operation.

Defense of the HPDB
The 4th ZI was recalled back to the McCarthy Plateau to defend the newly constructed Horizon Periphery Defense Barricade. During the fallback, elements of Zulu Company fought at the Second battle of Rookland, and reopened the Voslov Bridge for military and civillian elements making their way to St.McCarthy.

The Fall of the HPDB
When the seige began on the 58th of Harvest, the 4th ZI was deployed to defend the HPDB to buy enough time for Ragnarok to be activated. One notable team during the defense was Eagle Team, led by 1st LT Tina Byrne, Leading her squad and rallying a civilian militia, they took 2 trucks and caused chaos in the ranks of the Scalers. Allowing the defensive teams to inflict heavy casualties on the Scalers. Unfortunately when Ragnarok was activated Eagle team couldn't make it back to the wall in time and she was burnt alive by the weapon. Several squads were later sent out to scout areas that had been hit by the strikes. Only the tags of Eagle team were recovered.

Legacy
At some point after this, the 4th ZI was disbanded, along with most major military units, since the army had become so small. Fifteen years after Emergence Day and shortly after the Sinking of St. McCarthy, Gary Thorton wondered if the 4th ZI would someday be reformed, and toasted the fallen soldiers from the unit.