Justice League-DCBU-Main Continuity Timeline

Five Years Ago (Year One)

 * Martian Manhunter crashlands on Earth to prevent an invasion from White Martians. He sends a signal across the globe. Batman, Superman, Wonder Woman, Green Lantern and Aquaman all recieve the signal and help prevent the invasion.
 * The Justice League is formed to prevent global events.
 * After several months, Aquaman leaves the team after Black Manta invades Atlantis.
 * Green Arrow and Black Canary join the team after the Joker almost nukes Metropolis.

Four Years Ago (Year Two)

 * Dr Fate joins the team when Circe attempts to summon Trigon.
 * The Injustice League is formed. It's members contain Lex Luthor, Metallo, Cheetah, Mr Freeze, Mirror Master, Sinestro and Deadshot.
 * Bane breaks Batman's back, and he is forced to leave the Justice League

Three Years Ago (Year Three)

 * Batman resumes his position in the league.
 * The Flash vanishes after speeding up faster then the speed of light itself.
 * The Injustice League's members are sent to prison.
 * The Hall of Justice is built

Two Years Ago (Year Four)

 * Brainiac invades Earth, Aquaman, Atom, Hawkman and Hawkgirl join the League as a result of this.
 * Superman sacrifices himself to defeat Brainiac and sends him and Brainiac into an alternate dimension.

One Year Ago (Year Five)

 * Following his daughter's death, Martian Manhunter leaves Earth for meditation.
 * The Flash returns to the present day world, after having been trapped in a time loop.
 * Vandal Savage makes his move and re-forms the new Injustice League. It's members are: Savage, Metallo, Circe, Gorilla Grodd, Mirror Master, Giganta, Sinestro and Deathstroke.
 * The new Injustice League takes down the Justice League after discovering Batman's member files. After this event, the League agree that Batman is to resign.
 * Cyborg is "promoted" from the Teen Titans to the Justice League

Now (Year Six)

 * Superman returns to Earth and takes control of the League, making the new line-up: Superman, Wonder-Woman, Hawkman, Hawkgirl, Flash, Green Lantern, Atom and Captain Marvel.

Ten Years in the Future (Year Sixteen)

 * Superman is now the ruler of Earth, with Wonder Woman, Green Lantern, Aquaman, Captain Marvel, Hawkman and Dr Fate sub-leaders.

Twelve Years in the Future (Year Eighteen)

 * Superman is killed by Batman, and the other sub-leaders are sent to prison.

Twenty Years in the Future (Year Twenty Six)

 * The new Justice League is formed. It's members are Donna Troy, Beast Boy, Blue Beetle, Starfire and the Flash.
 * Supergirl joins the League after a battle with Bizarro copies of the original league.
 * The new Batman joins the team.
 * Static Shock joins the team.

''Please note that the majority of these events are subject to change. ''