The War of Wrath is a poorly-documented event in the Silmarillion with literally world-changing consequences. What do you imagine happened there?
For example, I consider some of the Valar indeed joined the Host of Valinor.
A conjecture on the matter: https://middle-earth.xenite.org/how-was-beleriand-destroyed-in-the-war-of-wrath/
Tulkas and Oromë could join the war as “combatants” and would be fine with the Maia Eönwë having overall command. After all, he’s Manwë’s representative and the Valar defer to Manwë.
If Occam’s razor is applied, Ulmo would likely be involved, even if indirectly, in the reshaping of Beleriand as far as the sea is concerned.
The Ainu participants are there to take on the supernatural and Balrog-tier elements. The Vanyar and Noldor members of the Host are for fighting the other Children of Ilúvatar since the Ainur can’t harm them directly.
It’s possible I’m misremembering, but didn’t the valar indeed fight during the war of wrath? Or was it just the lesser ainur?
After some researching online, I am going to steal this from reddit:
From the Unfinished Tales:
And a line that was changed by Christopher Tolkien in the Akallabêth, mentioned in The Peoples of Middle-earth:
Christopher Tolkien then proceeds to explain this changed line from the Akallabêth:
Thus it can be safely concluded that Eönwë is the one who personally chained Morgoth at the end of the War of Wrath.
As for my own head cannon? That is difficult to say… I guess I never imagined too much extra here. I suppose some nonses, but I can’t get out of my head is that earendil used the silmaril on his ship the blast Ancalagon with lasers…