Wars Of Angels And Men

Et factum est proelium magnum in caelo; Michael at angeli ejus praeliabantur cum dracone, et draco pugnabat et angeli ejus. Absit a fidelium cordibus, ut noc praelium tunc factum credant, quando per superbiam antiquus hostis cum satellitibus suis de coelo cecidit. Sed ab initio fidei Christianae usque ad finem vitae praesentis fieri sine ulla dubitatione tenendum est; quod ex eo in coelo, id est in Ecclesia, quo apostolica voce clamatur: Non est nobis colluctatio adversus carnem et sanguinem, sed contra spiritalia nequitiae in colestibus, draco ille id est diabolus repugnare semper et adversari probetur. Quod si nos pugnamus contra hanc sententiam, cur Michael pugnare dicitur? Quapropter sciendum, et nostrum et angelorum certamen contra diabolum esse, etiam in mulis aliis locis ostendi. Nam quamvis Petrus dixerit: Cui resistite fortes in fide; et Jacobus: resistite diabolo, et fugiet a vobis; tamen hoc ipsum per angelos fieri David declarat dicendo: Immittet angelus Domini in circuitu timentium eum, et eripiet eos. In quibus exemplaribus ostenditur quia nec nos sine angelorum, nec angeli sine nostro conflictu dimicant. Angeli autem Michael non ideo dicuntur, quod ipse eos, juxta quorumdam haereticorum  prefidiam, creaverit, sed quia eos a Deo in adjutorium acceperit; vel quia sub uno rege et ex una civitate militare creduntur: sicut et draconis angeli vocantur, qui ad eum pertinere, et ejus voluntatem perficere probantur. In quorum numero mali homines comprehenduntur; sicut et nos in bonorum angelorum Alcuinus, Commentariorum In Apocalypsin, Liber V Source: Migne PL 100.1154 c-d

And there was a great war in heaven; Michael and his angels fighting with the dragon, and the dragon fought and the angels with him. 1 May it be far from the hearts of the faithful that they believe that this battle was fought when on account of his pride the ancient enemy and his associates fell from heaven. But from the beginning of the Christian faith to the end of the present life that this is so, is without doubt to be held, because as far as this is of heaven, so it is of the Church, whence the Apostolic voice cries out, 'Ours is not a struggle against flesh and blood, but against the spirits of wickedness in the heavens' 2, that is, the dragon, which is the devil, is always fighting back and being proved an enemy. But if we fight, why, against this understanding, is Michael said to fight? It should be known that both our and the angels' struggle is against the devil, and in many places this is shown. For although Peter says, 'Resist him strong in faith,' 3 and James, 'Resist the devil and he will fly from you,' 4 yet that this is done by angels, David declares, saying, 'The angel of the Lord shall be sent out to camp around those who revere him and he will deliver them.'5 By which examples it is shown that neither we without angels nor angels without us fight in the conflict. Now they are not called the angels of Michael because he created them, as certain treacherous heretics claim, but because he receives them from God as assistants, or because under one king and from one city they are thought to fight, as even the dragon has his angels, who are proved to belong to him and the accomplishment of his will. Among which number we understand wicked men, as even we are of the good angels. Alcuin of York, Commentary On The Apocalypse of Saint John, Book 5 1 Apoc 12.7 2 Ephes 6.12 3 2 Pet 5.9 4 James 4.7 5 Ps 3.8