The Book of Revelation, verse-by-verse, Chapter Nineteen

Rev. 19:17
"And I saw an angel standing in the sun; and he cried with a loud voice, saying to all the fowls that fly in the midst of heaven, Come and gather yourselves together unto the supper of the great God;"

Here we see the angel of Rev. 1:1 calling the 144,000 to the battle called "the supper of the great God."
The verse is easy to read.
Standing in the sun means representing Jesus Christ.
Saying to the fouls is saying to the 144,000 who were sealed (Rev. 7:4-8) at the marriage (Rev. 19:5-8) in this fall of Babylon storyline (Ch. 17-21).

Whereas he was the one flying in the midst of heaven in Rev. 8:13 and Rev. 14:6, now his fellow servants, the 144,000, do as well. Thus the fouls fly in the midst of heaven. Meaning, the 144,000 fly upon the earth having been sealed to the Savior. Midst refers to the savior.

Keep the knowledge of this interpretation, for reassurance, when the tribulation comes, and you find yourself in despair. The Savior is coming for you (Rev. 13:10, Rev. 14:12).

Rev. 19:18
"That ye (the 144,000) may eat (destroy) the flesh of kings, and the flesh of captains, and the flesh of mighty men, and the flesh of horses, and of them that sit on them, and the flesh of all men, both free and bond, both small and great (the army of the beast and his false prophet, Rev. 19:20-21)."

This verse is easy to read.

Rev. 19:19
a) "And I saw the beast,
.....b) and the kings of the earth,
..........c) and their armies, gathered together to make war
.....a) against him that sat on the horse,
b) and against his army."

Verse 19:19 has a reverse in the antithesis leg of the chiasmus.

a) "And I saw the beast,
.....b) and the kings of the earth,
..........c) and their armies, gathered together to make war
.....b) and against his army."
a) against him that sat on the horse,

Parallel "a" shows the beast is against the Savior
Parallel "b" shows the kings of the earth are against the beast's army.

The kings of the earth are not against him that sat on the horse (Rev. 19:11).
Remember, the kings of the earth are the Savior's 144,000 servants (Rev. 1:5).

Rev. 19:20
"And the beast was taken, and with him the false prophet that wrought miracles before him (Rev. 13:11-18), with which he deceived them that had received the mark of the beast, and them that worshipped his image. These both were cast alive into a lake of fire burning with brimstone."

Being cast alive is to not be judged as yet, even though they are already dead in Christ. Their judgment, along with others of the wicked, is stated in Rev. 20:13-14.

Thus, the beast and false prophet are cast into hell to await their judgment like everyone else. Except that is, the saints of God who have salvation in Christ and are not judged but have eternal life.

The saints of God do not go to hell for judgment, but to the kingdom of salvation to await their reward.

Jesus' message to us is that of eternal salvation.
Do not take the mark of the beast, and if you do, you will go to hell forever (Rev. 14:9-11).

Rev. 19:21
"And the remnant were slain with the sword of him that sat upon the horse, which sword proceeded out of his mouth: and all the fowls were filled with their flesh."

In this verse, we see the army of the beast totally destroyed.
Although the Savior conducts the winepress himself (Rev. 14:20).
So this supper of God pertains to the gathering of the wicked armies to the winepress (Rev. 9:13-21, Rev. 14:17-19) that is expressed in terms of conventional warfare in Rev. 19:20.
The warfare is not conventional, but the armies of the beast turn on each other and destroy each other, as explained in OT prophecy in the type of Gideon.

Remember that a type is an event representing another event called the shadow. Gideon is the type representing the winepress, the shadow (Judges 7).