The Battle of Sector 3123 was a battle of the Galactic Civil War that occurred in Sector 3123. It came about when the Rebel Alliance learned of an important Imperial research facility in the fringes of a nebula within that sector, and hence launched a lightning attack to take it out. However, rebel intelligence greatly underestimated Imperial defences and hence most of the alliance taskforce was decimated upon arrival. After the battle, the transport containing the 12th Alliance Specforce team was missing, along with an Imperial cruiser containing its rival, the 888th Imperial Legion. Both were registered as 'missing in action'.