Search-and-Destroy Force

The are a division of the allied forces of Stigma, the Holy Knights and the Seven Deadly Sins formed during the new Holy War, designed to confront the Demon Clan's army and clear the way to Camelot

Current arc
Before the imminent Holy War against the demons, Merlin took care to divide the allied forces to face them. The "Search-and-Destroy Force" was designated as the largest group of the three representing the military force that would directly confront the army of the Demon Clan and would open the way to Camelot to the south. The group is formed by many of the Holy Knights of Liones under the command of Howzer, along with Sariel and Tarmiel as representatives of the Four Archangels, and Diane, King and Gowther as representatives of the Seven Deadly Sins. Gilthunder was to lead the Holy Knights with Howzer, but then decided to go to Camelot with the "Assault Force".

Before that, Ludociel used his Breath of Bless to empower most of the Holy Knights including the Pleiades of the Azure Sky in the group, so they may stand a chance against the Demons despite the psychological effects on their minds as zealots.

During the advance to Camelot, the group is confronted with the demon army. Initially, the Holy Knights are oppressed by numerical superiority and resources and are forced to retreat. However, Diane and King manage to eliminate much of the enemy army by themselves using their new abilities, while Sariel and Tarmiel easily do the same with an Omega Ark. The princess Elizabeth Liones took the path of diplomacy and managed to convince many of the demons to retreat and abandon the battle.

In the end, the group manages to defeat the entire enemy without any loss, thanks to Elizabeth's efforts to heal and keep everyone alive.

While trying to regroup, the group is surprised by the presence of Derieri of the Ten Commandments, who was persecuted by Estarossa, who wanted to kill her and steal her Commandment. The forces are attacked by the Black Hound of Estarossa, but are saved by Diane. Estarossa is sent back by Elizabeth and engages in a battle against Sariel and Tarmiel.

Initially, Sariel and Tarmiel have the upper hand grant to their Graces, until Estarossa absorbed the Commandments of Truth and Reticence that he has recollected, obtained such power that he was able to surpass the two Archangels, but his mind comes more unstable. Guila, Diane and King tries to fight him, but with no effect and Guila ends seriously wounded. At the end, Elizabeth sacrifices herself and allow to be taken by Estarossa. Upon regaining their original bodies, Sariel and Tarmiel go to rescue Elizabeth and kill Estarossa. King and Derieri decides to join them while the rest continues the way to Camelot. Hawk and Gowther also go after Elizabeth without the rest noticing.

The four of them arrive and see Estarossa's violent reaction due to taking in three of the Commandments but their memories of Mael and Estarossa are soon warped as they begin to notice the inconsistencies and soon the forbidden spell that Gowther placed on everyone 3,000 years ago begins to fall apart and Estarossa is revealed to have never existed and was in fact Mael this entire time who was turned into a Demon after the Demon King was tricked into giving him the Love Commandment.