The Alliance, also known as Team WCW/ECW and The Coalition, was a stable in the World Wrestling Federation (WWF) that existed during the Invasion storyline from July to November 2001.
The stable came about as a result of the WWF's purchase of World Championship Wrestling (WCW) in March 2001. The Extreme Championship Wrestling (ECW) name was brought in soon afterwards.
The original plan was for the WWF-owned WCW to be a babyface group, led by Shane McMahon (who was the owner of WCW in the angle) to go against the heel owner of the WWF, Mr. McMahon. During May and June 2001, wrestlers identified as being "under contract to WCW" (such as Lance Storm and Hugh Morrus) "invaded" World Wrestling Federation programming, by making several run-ins. The ultimate goal, reportedly, was for WCW to "take over" one of the WWF's two primary programs, either Raw is War or SmackDown!, and rebrand it as its own separate entity. The final twenty minutes of the July 2 Raw is War telecast was given over to WCW, which brought in its own commentators (Scott Hudson and Arn Anderson), ring announcer (Stacy Keibler), referee (Nick Patrick), ring apron, and graphics, to present a match between Booker T and Buff Bagwell for Booker's WCW Championship (which he had won on the final episode of Nitro). This continued on SmackDown!, where Gregory Helms lost the WCW Cruiserweight Championship against Billy Kidman and Booker defended the WCW Championship against Diamond Dallas Page.
Following this, WCW was made a heel group who was out to destroy the WWF. On the July 9 episode of Raw is War, when then-face WCW owner Shane was scheduled to face Page in a street fight, the two instead attacked The Undertaker, turning Shane heel.
Later that night, during a tag team match pitting Chris Jericho and Kane against WCW's Lance Storm and Mike Awesome, former ECW stars Rob Van Dam and Tommy Dreamer interfered and attacked Jericho and Kane. Justin Credible, Raven, Tazz, Rhyno, and The Dudley Boyz (all ECW Alumni) came to the ring shortly thereafter and joined Van Dam and Dreamer in attacking Jericho and Kane, and Raw is War color commentator Paul Heyman announced that together, he was forming an ECW team to take on the feuding WWF and WCW factions.
Later that evening, Vince and Shane agreed to join forces to take out ECW once and for all in a twenty-man brawl between Team WWF (Hardcore Holly, Big Show, APA, and Billy Gunn) and Team WCW (Chris Kanyon, Chuck Palumbo, Sean O'Haire, Shawn Stasiak, and Mark Jindrak). When WCW and ECW faced off in the ring, however, they instead congratulated each other and attacked the WWF wrestlers. It was revealed that ECW had merged with WCW to form a "supergroup" to more effectively challenge the WWF and that Stephanie McMahon had purchased the defunct company.
At WWF Invasion, Team WCW/ECW (Booker T, Diamond Dallas Page, Rhyno, and The Dudley Boyz) defeated Team WWF (Stone Cold Steve Austin, The Undertaker, Kane, Kurt Angle, and Chris Jericho) in a ten-man tag team match billed as the "Inaugural Brawl". During the match, Austin turned on the WWF and joined The Alliance, helping them score the victory, after about a week of teasing a face turn.
Over the next few months, the two sides fought back and forth. Except for a few wrestlers (X-Factor and Christian, for example), every feud was a WWF wrestler versus an Alliance wrestler. Ten combined WWF and WCW championships were defended among all the wrestlers in the various feuds. Over time, numerous WWF superstars would defect to the Alliance, including Test, William Regal, Ivory, and Christian. Former ECW and WCW wrestler Steven Richards would belatedly defect to the Alliance, bringing WCW alumni KroniK with him. In return, Chuck Palumbo and Torrie Wilson defected from The Alliance to the WWF. Kurt Angle also defected to the Alliance on the October 29 episode of Raw.
In late October, both sides agreed to end things once and for all. A "Winner Take All" classic Survivor Series elimination tag team match was set for the Survivor Series pay-per-view, with the losing company going out of business forever. In addition, two title unification matches were signed, as the WCW World Tag Team Championship and the WWF Tag Team Championship were to be unified in a match between The Dudley Boyz and The Hardy Boyz, while Edge and Test would meet in a match to unify Edge's WCW United States Championship with Test's WWF Intercontinental Championship. Further, twenty WWF and Alliance members would square off in what was called the "Immunity Battle Royal", with the winner of the match keeping his job for one year regardless of whether his side won or not.
In the end, Team WWF (The Rock, Chris Jericho, The Undertaker, Kane, and Big Show) defeated Team Alliance (Stone Cold Steve Austin, Kurt Angle, Rob Van Dam, Booker T, and Shane McMahon) when Angle double-crossed The Alliance by turning on Austin while he was fighting The Rock during the closing stages of the match. The Rock then pinned Austin, thus putting The Alliance out of business. Earlier in the night, The Dudley Boyz defeated The Hardy Boyz to unify the tag team championships while Edge defeated Test to win the Intercontinental Championship. Despite his loss, Test entered the Immunity Battle Royal later that night and won.
With The Alliance's loss, nearly all of their members lost their jobs following the match. Exceptions were made for Stone Cold Steve Austin, then-WWF Champion; The Dudley Boyz, who won the WWF Tag Team Championship; Stacy Keibler, the Dudleys' manager; Rob Van Dam, who at the time was the Hardcore Champion; Christian, who at the time was the European Champion; Immunity Battle Royal winner Test; and Alliance Commissioner William Regal, who was forced to join the "Mr. McMahon Kiss My Ass Club" to keep his job. Some of them would be hired back over the next few months, with the majority of them returning when the brand extension began. The WWF Light Heavyweight Championship, which was held at the time by X-Pac, was quietly retired and replaced with WCW's Cruiserweight Championship.
The next night on Raw, Mr. McMahon celebrated his victory by making a slow return to his villain character, aligning himself with The Alliance members that were sticking around. Later that night, he resumed his rivalry with Austin, who turned face by attacking Angle and aligning himself with a returning Ric Flair. After being "fired", Shane walked out on his own and congratulated his father for his victory, and spent most of the next eighteen months away from television. Stephanie blamed Shane for everything and was escorted out of the arena by security, but unlike Shane she made a quick return and began appearing again shortly after the return of her then on-screen husband Triple H in January, which led to a three-month-long feud that ended shortly after WrestleMania X8.