Next:	Skirmish on Gei Hinnom
Battle of Eden Prime Part of the Eden Prime War
Three dormant husks impaled on dragon's teeth inside Colony Euphoria during the battle.
Date:	9 June 2183 CE
Location:	Colony Euphoria / Eden Prime / Utopia / Exodus
Outcome:	Strategic SA victory Saren Arterius manages to access the prothean beacon Geth Heretics deal significant damage to Colony Euphoria and inflict heavy casualties Crew of the SSV Normandy unable to garner any evidence to convict Saren Arterius Pyrrhic Alliance victory Prothean beacon accessed by Alliance despite geth countermeasures Several geth objectives, including destroying the spaceport to cover their withdraw, are left uncompleted Geth reserve forces are pacified by the Normandy Squad Ashley M. Williams is recruited into the Normandy Squad Beginning of the Eden Prime War
Belligerents Systems Alliance Saren's Alliance Geth Heretics Supported by: The Reapers Commanders David E. Anderson (late in the battle) Marcus L. Shepard (late in the battle) Kaidan Alenko (late in the battle) Stephen Banner † Salvatore Mankins † Saren Arterius Benezia M'Soni Sovereign Strength Systems Alliance Colonial Army Eden Prime Colonial Guard Systems Alliance Navy 1 Normandy-class stealth frigate SSV Normandy Normandy Squad 4 combatants Systems Alliance Marine Corps 212th Planetary Defense Group Dog Squad Able Squad Panther Squad Charlie Squad Bravo Squad Over 500 additional marines SPECTREs 1 Council spectre Geth Heretic Navy Fleet of the Herald 1 Sovereign-class Reaper Sovereign 27 geth dropships 8 geth light frigates 4 geth light cruisers 1 geth heavy cruiser Geth Heretic Army 922 geth heretic troops 20 geth recon drones 567 geth troopers 35 geth destroyers 300 troopers, drones and destroyers in reserve 40 Gen I husks Casualties All of the 212th Planetary Defense Group 269 civilians LCpl Richard L. Jenkins Stf Sgt. Stephen Banner Pvt. Nirali Bhatia Sgt. Gerald Donkey Lt. Col. Salvatore Mankins Council spectre Nihlus Kryik 265 geth troops All husks

"Eden Prime is under attack from unknown synthetic forces! We are heavily outnumbered and require immediate assistance! They came out of nowhere! Strength of enemy forces is overwhelming; they have some kind of mothership, its tearing us apart! Send reinforcements no-"

— Private Nirali Bhatia, moments before she is killed.

The Battle of Eden Prime (alternatively called the Battle of Colony Euphoria), and known as Operation Daybreak to Saren's forces, was a small-scale attack by geth heretic forces on the Alliance colony of Eden Prime that occurred on 9 June 2183 CE. The battle saw the first observed deployment of geth combat forces since the First Morning War three centuries earlier, as well as the first recorded observation of the warship known as Sovereign, which would later be revealed to be part of an ancient genocidal hyper-advanced machine race. The battle was the first in the Eden Prime War, but was also the first in the Reaper Campaign that followed.