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First Contact War
Clockwise from top left: Alliance recruitment poster; Alliance marine fighting on Shanxi during the First Battle of Shanxi; Alliance marines encroach on entrenched turians during the Liberation of Shanxi; Alliance engages Hierarchy forces over Shanxi
Date:	31 October - 29 December 2157 CE (1 month and 30 days)
Location:	Alliance Space / Milky Way Galaxy
Outcome:	Military stalemate, Alliance claims victory Systems Alliance reclaim Shanxi Council intervene and end conflict
Engagements:	Relay 314 Expedition Incident Skirmish at Relay 314 Shanxi campaign First Battle of Shanxi Occupation of Shanxi Liberation of Shanxi Battle of Charon
Belligerents Systems Alliance Turian Hierarchy Commanders Joseph H. Garrong Steven Hackett Arthur Williams Adina Netanyahu Kastanie Drescher Nitesh Singh David E. Anderson Richard Bulwark Lucas Parkes Kaessius Opinianus (involved in the last week of the war) Septimus Oraka Aegubus Terculus Irix Coronati (mobilized, but did not fight) Strength Systems Alliance Marine Corps 2,100 marines 2 N7s 80 tanks 30 aircraft Systems Alliance Army 5,000 troops 30 tanks 67 aircraft Systems Alliance Navy First Fleet 253 ships Second Fleet 201 ships Third Fleet 368 ships Systems Intelligence Administration Systems Alliance Colonial Army Shanxi Colonial Guard Marine Corps of Palaven 300 marines 5 Armigers 20 tanks 5 close-air support aircraft Navy of Palaven Twelfth Fleet 381 ships Relay 314 Patrol 6 ships Casualties 700 marines killed 120 ships 230 marines killed 220 ships destroyed

"Yeah, sure, okay turian. You keep telling yourself what you did was 'right.' You can say all you want that you stopped us from doing something stupid. That we were a kid with a loaded gun. But tell me...when a kid has a loaded gun, do you take away the gun or just shoot the kid dead?"

— Charles Saracino arguing with a turian during a parliamentary debate.

The First Contact War, also known as the Human-Turian War, known to the turians as the Relay 314 incident and to the Council as the Relay 314 conflict, was a relatively brief conflict between the Systems Alliance and the Turian Hierarchy. Continuing with their Phase Two Colonization Initiative, the Alliance sent an expedition to the recently discovered Relay 314. A turian patrol was patrolling the relay at the time, as was the conditions of the Reckless Relay Activation Countermeasure Act (54), introduced following the Rachni Wars millenia earlier.

Unable to identify the trespassers, the turians opened fire and destroyed the expedition, which caused the Alliance to retaliate with military action, destroying the turian patrol in turn. This led to an outbreak of war on October 31, 2157 CE. The conflict itself lasted just over two months, until the Council intervened and ended it, with humanity being asked to join the galactic community. Even thirty years after the war, animosity continues to exist between humanity and the turians, although some of it is beginning to wear off. However, pro-human political parties such as Terra Firma and Remember Shanxi have continued to campaign against any further human-turian relations.