The war in heaven is not against God, but between Satan and his angels and Christ and his angels.
In reality, what it was was a COURT TRIAL! It was an intellectual and legal argument over whether Satan deserved death or not under the circumstances. The basic consensus opinion handed down was that even though Jehovah had made Satan so beautiful and Satan could claim that that in somehow predisposed his fall and rebellion, nobody thought that that excused trying to kill billions of innocent humans. I mean, if you're unhappy with life and God and just can't take it any more, jump off a cliff. But when you try to kill lots of people also just to make your point or be vengeful, sorry, you're just evi, angry and vindictive.
So Satan was kicked out of heaven on December 25, 2009 after his trial. But the angels in heaven partied for the next three days!!! So Satan must have been an astronomical pain in the arse up there. They were glad to see him kicked out.
So that is more of what the battle was like, a court case, Jesus and his angels vs Satan and his angels. Jehovah was just overseeing things.
Even so, just before this, Jehovah was talking with Satan. But that's not surprising because after the 1000-year abyss, Satan comes back to test post-millennial mankind. Don't you get the idea that Satan is cooperating with this effort?
So even though Satan is the arch opposer of God, apparently he is tolerated and is used by Jehovah, even down to the last minute.
A MOCK TRIAL. I will note, however, in the big picture, the trial was a mock trial. It was just to examine the issues. Satan's death is not a result of his rebellion or sins. Basically, after Satan became a problem, God decided to kill everybody off, typical, and then start over. The good angels volunteered to die too. The idea is that if God killed all the angels, just on GP, just as a general rule that all angels must die once just as a part of the creation cycle, then God would be able to get rid of Satan on that basis without showing favoritism. That is, all angels die, good or bad, including Jesus Christ. No one was exempt. But after everybody has died once, of course, God can bring back his favorites. Thus death is only significant if it is permenant. So since Satan was going to die anyway, along with all the angels in heaven, the 6000 years of pain and suffering in the earth and these psychological battles between Christ and Satan is "just for the record" to establish a moral and legal context beyond the inevitable.
LS