First siege of Atlantis

In the later stages of the Ancients century long war with the Wraith, after destroying the Ancients Colony cities with a fleet augmented with the army created at the cloning facility such as the one located on Athos, there was little between them and Atlantis.

The assault began with the Point Defense Satelites located at Lanteas system boarders, as the organic fleet exited hyperspace, they meet quick destruction from afar when the Lantean Satelite crews, under the command of Moros, began to target and destroy the Wraith ships that entered in-system, the First Siege of Atlantis had begun. While the stout determination of the Lanteans and their powerfull technology kept the numerous and aggressive foes at bay for the begining of the attack, the Wraith brought in greater numbers and began extreme acts of relentless assaults, like ordering thier Dart pilots to commit to kamakazee charges against the Defenses of Atlantis and massive barages of Hive and cruiser weapons fire, obliterating all in their path. Eventually the Wraith manage to destroy all of Lanteas outer system defense, minus one Satelite which they disabled and left alone, and moved their ships into Lantea's orbit as well as Atlantis' weapons range unpon which the Cit-Ships Drones destroyed the ships but only damaged one to crash into the planet belows ocean. However effective the Lanteans were at destroying individual ships, the whole of the Wraith fleet continued to feild as many ships as possible into Atlantis orbit in order to finish of their weakening adversaries. Seeing no way to win the war, yet still capable of dealing tremendous damage, the Lanteans send a deliagtion under the protection from some of their most powerful warships still remaining from the long years of war in the hopes of negotiating for a truce. This was not the case, for the aggresive Wraith, empowered by the knowledge that they were on the edge of winning the war and making the galaxy their own and it's renewable stock of Human herds to consume, the Wraith, ignoring how much of their numbers would be destroyed, attacked the deligation, destroying it as well as the Lanteans only means of effectively continuing the the conflict. The Lantean-Wraith had been lost.

As Atlantis was only armed with Gate Ships and only a few dozen Drones left, the Lanteans saw no way to continue fightig as very little remained of what was once part of their great civilization to give them the means to defeat the Wraith. With no way to produce Drone to replenish any ships left over, and with the Wraith everywhere in the galaxy, the Lanteans recalled every Lantean back to Atlantis for the evacuation. With the main force of the Wraith fleet overing over Atlantis, ready to unleashed a massive bombardment upon the city if it ever surfaced, the once great capital of the Ancient Domain was trapped at the bottom of Lanteas oceans, facilitating the only way for any way for anyone left of the war to survive the Lantean council decided to evacuate throw the Stargate to Earth in the Hopes of returning to Atlantis. It iis possible that they had hoped to return with reenforcements from their brethern that might still be alive in the Milky Way, or possibly enlist the help of the Humans from Earth from which those they left behind to help them rebuild their civilization. What ever the case was, when they returned to Earth, to their suprise, all they found were tribes of spear weilding hunters living in an eviroment to harsh to rebuild the Ancients civilization. Instead, they decided to lay the seed for which the future decendans might use, several interbred with man in order to past on the ATA gene and help create the earliest civilizations. some went on to seek Ascension, others likely help forge the Alliance of Four Great races.