How does Saint John describe the heavenly conflict between the Woman clothed with the sun and the great red dragon in Apocalypse 12?

Saint John beholds an awe-inspiring vision in the heavens: a luminous woman clothed with the sun, the moon beneath her feet, and a diadem of twelve stars crowning her head. She is pregnant, crying aloud in labor and enduring intense agony to bring forth her child. A Challoner annotation explains that this woman prefigures the Church of God, and says it may also, by allusion, be applied to the Blessed Lady. Clothed with Christ, with the fleeting, changeable things of this transient world beneath her feet, and crowned by the twelve apostles, the Church travails in pain to bring forth spiritual children and form Christ within them amidst persecutions.

Simultaneously, a second celestial portent appears: an immense crimson dragon featuring seven heads, ten horns, and seven royal diadems upon his heads. With his tail, the monster drags down a third of the stars of heaven, hurling them violently to the earth. He stations himself threateningly before the laboring woman, intending to devour her infant the instant it is born. The woman gives birth to a male child destined to rule all nations with an iron scepter; but the child is taken up unto God and His throne. The woman then escapes into the desert wilderness, where God has prepared a refuge to sustain her for one thousand two hundred and sixty days.

Cosmic war breaks out in heaven: Saint Michael and his faithful angels wage battle against the dragon, who fights back fiercely alongside his rebel followers. Yet the demonic host is completely overcome, their place no longer found in heaven. That ancient serpent, called the devil and Satan, who leads the entire world astray, is cast down to the earth together with his fallen angels. A thunderous voice in heaven proclaims the arrival of salvation, divine power, the kingdom of God, and the authority of Christ, rejoicing that the relentless accuser who denounced the brethren before God day and night has been overthrown. The victorious martyrs conquered him through the shed blood of the Lamb and the testimony of their faith, loving not their mortal lives even unto death. While the heavens exult, a severe warning is sounded for the earth and sea, because the devil has descended in fierce fury, knowing his time is short.

Enraged by his expulsion, the dragon pursues the woman who bore the male child. To secure her safety, she is granted the two wings of a great eagle to fly into the wilderness to her designated sanctuary, where she is nourished for a time, times, and half a time, sheltered from the serpent's presence. The serpent spews a torrent of water like a river from his jaws to overwhelm her, but the earth opens its mouth and swallows the flood. Infuriated by his defeat, the dragon departs to wage relentless war against the rest of her spiritual offspring—those who keep God’s commandments and preserve the testimony of Jesus Christ—while he stands upon the sands of the sea.