(There is going to be war in heaven:)

Revelation 12:7 And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels,

(Why are they fighting?

What triggers the start of this war?

Will it only be in the second heaven, or will it also be going on in the third heaven?

Do they hurt one another?

Clearly they can feel pain:)

Revelation 20:10 And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever.

(Can they harm each others' bodies?)

Revelation 12:8 And prevailed not; neither was their place found any more in heaven.

(Apparently, the devil and his angels lose the war.

How long did the war last?)

Revelation 12:9 And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him.

(Will this temporarily cease the hostilities between the two sides?

Will the devil and his angels instead turn their aggression solely against the Jews and the inhabitants of the earth?

When Jesus returns, accompanied, also, by the holy angels, will these angelic hostilities reignite?

At Armageddon, and the valley of decision, while Jesus is destroying those who come against Israel and Jerusalem, will these two groups of angels fight each other, again?)

(When the devil is cast out into the earth, will people see him coming down?

Will he appear as an angel of light? Will he be invisible, or will he be visible, like in Genesis 3?

What if he floats down, feet first, and touches down on the mount of Olives?

What would people think of that?)

.