Sidewinder

"It's REALLY FUCKIN' COLD!"

- Leonard L. Church on Sidewinder

Sidewinder, an icy environment, is an as of yet undesignated outpost, unlike 1-A/B Blood Gulch and 17-A/B Valhalla. The same location is used as a backdrop for a battle of the Reds and Blues against O'Malley/Doc in the climax of Season 2.

Background
Sidewinder was Church's old outpost until Tex killed all of the Blue Team soldiers, only sparing Church because of their history together. When the Blood Gulch Red and Blue Teams returned to Sidewinder, they found that the Sidewinder Red Team was still there even though there was no enemy to fight. Grif and Church were captured by the Sidewinder Reds, who confused them with the enemy. The Sidewinder Reds were eventually killed by Wyoming.

Wyoming stumbled onto Grif and Church, and, after mocking them a bit, left them to starve. However, another version of Church from the future freed the two. To stop O'Malley, Simmons teleports the Grunts from Battle Creek and tells them that O'Malley had their flag. The Grunts massed on O'Malley, knocking him down, and beginning to teabag him (O'Malley was visibly disturbed by this). When the bomb in the stomach of Church's robot body went off, it sent the Reds, the Grunts, Tucker, and Caboose into the future. Church, however, was thrown into a temporal loop. Much later, Church possessed Caboose, and accidentally sent Caboose's mental image of Sister (whom, Caboose had thought was Church's twin brother) into the real world, which was then accidentally thrown into the temporal loop when he walked too close to a malfunctioning Wyoming armor suit.

Much later on, in Revelation, Epsilon and Tex return to Sidewinder. Tex reveals that the Alpha was taken to Sidewinder after the Freelancer break-in, and that the real reason she spared Church when she obliterated the Blue Team soldiers was that the stress of Omega and Gamma's constant combat scenarios had broken the Alpha down too far, so far that he didn't even recognize her anymore.

Tex goes on to disable Epsilon in the middle of the snow fields with a single gunshot. She then leaves to "get a few things ready." In the ensuing fight between her, Washington, and the Meta, Sidewinder itself suffers extensive damage - remote-detonated explosives planted by Tex blow up Washington's Warthog, create a massive avalanche of ice, and finally break off an entire, vast section of the battlefield to plummet into the frigid water below (nearly taking Washington and the Meta with it). Sidewinder's landscape is altered further when a Pelican, piloted by Grif and carrying Simmons, Sarge, Tucker and Caboose, crashes into the battlefield before being dropped off the cliff by little more than a halfhearted kick from Sarge.

Trivia

 * In the episode A Shadow of His Former Self, the Blue Team refer to Sidewinder as "the Ice Planet". In subsequent appearances though, Sidewinder is treated as a location on the same planet as Blood Gulch, rather than a seperate planet.