Boros Legion

Angels occupy the highest tier of the Boros hierarchy, from the guildmaster Aurelia down to the hosts of holy warriors and advisors in leadership roles. Their opinions and advice are deeply respected in the guild, though the angels aren't above engaging in the machinations of mortal politics. The angels include the wise, strategic warleaders; the holy champions and paragons of war known as firemanes; and battleforce angels, who form the bulk of the legion's angelic warriors.
From the perspective of the average Boros soldier, the angels embody the ideals the Boros hold dear. Few mortal soldiers gain admission into the presence of the warleaders and other powerful angels, but battleforce angels fight at the forefront of the legion's ranks, and they form strong friends hips with mortals under such life-and-death circumstances. Boros paladins are the members most likely to converse with the angels and be charged with implementing their plans. The garrison commanders who convey the angels' commands a re accessible to the ordinary soldier. In addition to Sun home, the Boros maintain smaller garrisons throughout the Tenth District, at least one in each of the six precincts.

Wherever criminals exploit others, petty tyrants make grabs for power, or violence erupts and leaves devastation in its wake, Boros soldiers are there fighting to make things right.
The Boros Legion is defined by the tension between its goal of establishing order and harmony and the fiery zeal that drives many of its members. The guild stands for peace and justice, which can be established only through the rule of law. Its moral stance is fundamentally good, as it strives to protect the innocent and powerless from oppression and exploitation. At the same time, members of the legion are passionate about their pursuit of justice, spurred by their righteous wrath into action against evil and injustice. Ironically, this means that individual members sometimes break the rules they are charged with enforcing, cleaving to the spirit of the law when the letter no longer serves justice.
Because the Guildpact - the one force on Ravnica that can keep the guilds from destroying each other- is now embodied in a single, unreliable person who vanishes for weeks or months at a time, the legion is in a heightened state of vigilance. In this time of uncertainty, the Boros are on constant alert for military threats. They work to maintain their fortifications to ensure that they aren't overrun by Gruul marauders. Construction proceeds on new strongholds near Gruul territories, but in general the Boros prepare for a military threat the same way they always have- by fielding the stronger army.
The angels are also bracing for a subtler threat: the danger of infiltration by House Dimir. The Boros are becoming increasingly aware of the possibility that their guild could be undermined from within. Security at garrison buildings is vigilant, with angels watching the entrances at all times for spies.

The archangel Razia was the original guildmaster of the Boros Legion, which was established to serve as Ravnica's standing army. Razia served as its guildmaster for almost ten thousand years. Legend says that all the other angels of Ravnica were created in the image of this semidivine figure, and her death was devastating to the guild. Aurelia, the current angelic guildmaster, is the third to hold that title.