In 3 ABY, Carlson was stationed at Echo Base, the headquarters of the Alliance High Command on the planetHoth. There, he served under the command of MajorBren Derlin. That year, the base was discovered by the Empire, which launched a ground assault on the Alliance. Carlson fought in the Battle of Hoth, which ended with the Alliance being forced to evacuate their base, Carlson among them.[1][4]
Following his evacuation, Carlson remained with the Alliance Fleet until 4 ABY,[1][4] attaining the military rank of sergeant.[1] During that year, the Alliance discovered that the Empire was constructing a second Death Starbattlestation in orbit over the Forest Moon of Endor. The Alliance decided to attack the Death Star while it was still in construction; however, in order to destroy the station, the Alliance first had to deactivate the SLD-26 planetary shield generator on Endor protecting the superweapon.[5] A strike team was organized by General Han Solo to infiltrate the moon. The team was composed exclusively of volunteers who had previously served at Hoth. Solo needed only to make a quick call to Major Derlin, and the team was promptly assembled.[4] Carlson, by then a veteran scout[6] and pathfinder, joined the team,[2] eager for revenge against the Empire.[4]
Carlson[1] and the rest of the group traveled to the Endor system aboard the stolen Imperial Lambda-class T4a shuttleTydirium, piloted by Solo, and bypassed the Imperial Navy with the use of a stolen Imperial code. After landing on the moon,[5] Carlson,[1] along with the strike team, began scouting the area, but Solo and other strike team members Luke Skywalker, Leia Organa, Chewbacca, and the droidsR2-D2 and C-3PO, became separated from the main group. Nevertheless, Solo ordered the squad to continue on.[5] The squad made its way toward the shield generator under Derlin's lead.[7]
When night fell,[7] Carlson[1] and the squad made camp in a camouflaged shallow ravine, posting two sentries and setting up a blanket grid with their scanning equipment. Shortly after their first sleeping shift, the scanners detected an All Terrain Scout Transportwalker moving toward their location. Corporal Beezer and another member of the squad, LieutenantGreeve, jammed the walker's transmissions and destroyed its spotlights with a sniper rifle, respectively, and the squad circled the walker in order to keep it off balance. Corporal Delevar, the team's medic, fired a smoke canister into the AT-ST's cockpitwindow when it began firing randomly into the trees and foliage. The resulting smoke explosion forced the walker's crew to abandon the vehicle and surrender to the strike team. The squad captured the Imperials and forced the walker pilot to make a comm check-in at blasterpoint. The squad continued on to the rendezvous point, forcing the walker pilot to make several more check-ins on the way to explain the scout walker's absence.[7]
The strike team's destruction of the deflector shield enabled Rebel starfighters to destroy the second Death Star itself.
Solo and the others then rejoined the rest of their group, having allied themselves with the Ewok tribe of Bright Tree Village, who showed the Rebel commandos a route to the shield generator bunker's backdoor.[5] Carlson[1] and the rest of the commandos proceeded into the bunker; however, they were soon ambushed by Tempest Force, the Imperial Militarylegion stationed on the moon, and the entire strike team was captured and led outside the bunker. Their capture proved to be brief, however, as the Ewoks attacked the Imperial troops, turning the tide of the battle in favor of the Rebel Alliance. The Rebel commandos successfully destroyed the shield generator[5] with the use of 7-PrG proton grenades.[8] With the Death Star's deflector shield destroyed, Alliance starfighters were able to destroy the Imperial superweapon.[5]
Brooks Carlson had fair skin and browneyes. His hair was gray in 4 ABY.[1] During his service at Echo Base, Han Solo saw Brooks Carlson's loyalty and dedication in action, as well as willingness to get the job done,[1][4] and was aware of his resourcefulness and ability to devise creative situations.[1][9] When he joined the strike team, Carlson eagerly volunteered in order to get revenge on the Empire, having been turned into a hardened veteran from the Battle of Hoth. Solo informed the strike team about the risks of the mission to Endor, which Carlson willingly and eagerly accepted.[1][4] While on Endor, he wore the standard Rebel commando outfit, consisting of a beige jacket with a light-colored shirt and a helmet.[1] Carlson was a veteran scout[6] and pathfinder by the time of the Battle of Endor.[1]