Previous:	Attack outside Baria Frontiers Raid on Therum
Concurrent:	Armstrong offensive Battle of Feros (Phase I)
Next:	Battle of Feros (Phase II)
Battle of Therum Part of the Eden Prime War
A geth armature enters combat mode, with two geth troopers flanking it, ready to defend the excavation site
Date:	17 June 2183 CE
Location:	Excavation Site / 30 miles south of Nova Yekaterinburg / Therum / Knossos / Artemis Tau / Milky Way Galaxy
Outcome:	Tactical Alliance victory Normandy Squad successfully locates and extracts Liara T'Soni before she is captured Geth forces present pacified and forced to withdraw First major victory for Alliance forces Liara T'Soni is recruited into the Normandy squad
Belligerents Systems Alliance Saren's Alliance Geth Heretics Droya's tank-bred krogan Commanders Marcus L. Shepard Gatatog Verx † Strength Normandy Squad 6 combatants 1 M35 Mako Systems Alliance Navy 1 Normandy-class stealth frigate SSV Normandy Geth Heretic Army 341 troops 3 geth recon drones 40 geth assault drones 253 geth troopers 16 geth destroyers 5 geth juggernauts 20 geth hoppers 4 geth armatures 1 geth colossus Geth Heretic Navy Heretic Reserve Fleet 1 geth light cruiser 15 geth dropships Indoctrinated forces 12 tank-bred krogan Casualties None 214 geth troops 2 dropships All tank-bred krogan Gatatog Verx

"Rescue mission? Well, that's what it turned into, at least."

— Marcus L. Shepard.

The Battle of Therum was initially an extraction operation turned counterattack by members of the Normandy squad against geth heretic forces on the Alliance frontier colony of Therum that occurred on June 17, 2183 CE. The first engagement since the Battle of Eden Prime, the battle was the first of many victories against Saren's forces, with the Normandy squad managing to successfully extract Liara T'Soni, who would then become a member of the squad.