Previous:	Occupation of Shanxi Battle of Charon
Liberation of Shanxi Part of the Shanxi campaign (First Contact War)
Alliance marines of the 1st CEF encroach on turian positions on Shanxi
Date:	21 December 2157 CE
Location:	In orbit around and on Shanxi / 23 Ursae Majoris / Local Cluster
Outcome:	Strategic Alliance victory Shanxi liberated by Alliance forces Hierarchy Twelfth Fleet withdraws from 23 Ursae Majoris First Contact War ends a week later
Territorial changes:	Reversal of turian gains in the Fall of Shanxi and eviction of turian forces from Alliance space
Belligerents Systems Alliance Turian Hierarchy Commanders Kastanie Drescher Adina Netanyahu Nitesh Singh Joseph H. Garrong Lucas Parkes Alec J. Ryder Aegubus Terculus Septimus Oraka Barcus Fedorian Saren Arterius Strength Systems Alliance Navy First Fleet 253 ships Second Fleet 201 ships Third Fleet 368 ships Systems Alliance Marine Corps 1st Colonial Expeditionary Force 1,691 marines 18 M28 Angel IFVs 42 M27 Speartooth MBTs 11 AH-2B Python gunships Shanxi Colonial Guard 167 rearmed captured guardsmen Navy of Palaven Twelfth Fleet 349 ships Marine Corps of Palaven 403rd Legio Group 900 marines 16 Tyrant-class heavy tanks 4 Bireme-class IFVs 5 Hasta-class GAAs Armiger Legion 3rd Armiger Maniple 5 Armiger special operators Casualties 19 ships 340 marines 7 M28 Angels destroyed 4 gunships 117 ships destroyed, 18 damaged 378 marines killed 1 Armiger operator killed, 3 captured 10 tanks destroyed All aircraft shot down

The Second Battle of Shanxi, commonly known as the Liberation of Shanxi and to the Alliance operationally as Operation Ragnarok, was a major surface and naval engagement that occurred as part of the third and final phase of the Shanxi campaign during the First Contact War. It was the final battle of the war, as well as the Alliance's most significant victory against turian forces. The turian Twelfth Fleet had returned to Shanxi after its defeat at Charon, and small contingents of captured Alliance forces had begun insurgency operations against turian occupation troops. The combination of these factors meant the turians were unprepared when the Alliance Second Fleet launched a swift counterattack. The battle was brief, with Septimus having his troops evacuated from the planet and then tactically withdrawing. He made one last attempt to hit Drescher's fleet in the rear, but Garrong arrived with the First and Third fleets before he could. Heavily outnumbered, he withdrew, but not before he sent a distress call to Palaven itself. It later went down as the most humiliating defeat in turian military history, and was the final nail in the coffin of Septimus' career. Upon receiving word of the defeat at Shanxi, Primarch Opinianus ordered an immediate full-scale mobilization of the turian military. However, word from the Hierarchs quickly reached the Citadel Council of the escalating situation, and they stepped in and ended the war before it could go any further.