The First Battle of the Maw started when Rogue Squadron was sent to patrol The Maw for any signs of a rumored Imperial prison facility. During their patrol they noticed the area near one larger asteroid to be heavily defended.
In their Y-wings, Wedge Antilles and Rogues 3 and 4 detected a group of Imperial tankers, and their presence was revealed. TIE/ln starfighters approached the Rebel starfighters and intense waves of them made it harder for Wedge to reach his target; a shield projected to protect a base which indeed was the rumored prison facility.
Wedge disabled the shield protecting the facility on the surface and they descended towards the base.
Karie Neth and a number of other Rebel prisoners captured after the Imperial assault on Hoth had managed to break out of the facility, but were desperate for support in order to escape safely. Karie Neth sent out a message begging for someone to hear her. Luckily, Wedge had just made it to the facility and responded. Karie identified herself as the leader of the prisoners and asked Wedge and his wingmen to destroy the guard towers protecting the prison building, which were armed with turbolasers.
Wedge sent his wingmen to attack the TIE Fighters and TIE Interceptors, while he destroyed the towers protecting the prison and the weapons storage building. After taking out the comm array so the base could not contact a nearby Star Destroyer patrol, he flew to the other side of the base at the hangars and destroyed the guns there so the prisoners could hijack a craft. Traveling in an Armored Hover Train hijacked from the Imperials, the prisoners reached the hangars and escaped in a Sentinel-class landing craft. Wedge covered their escape until they could enter hyperspace, and then he and his wingmen hyperspaced out to the fleet in the Outer Rim Territories.
During the escape, the prisoners managed to plant a number of explosive charges along the train track, destroying the facility.