You are wrong to assume that everyone in that 5% want war.
And what about the soldiers or operations folks that actually carry out the war?
We could do a better job punishing soldiers for war crimes. But responsibility for the war itself rests with the President, congress, and the ones with power over them (which is supposed to be the entire population, but the top 1% do have an incredibly outsized influence in US politics. Not that I think it's healthy to codify that)
I am pretty sure you can quit if you think your employer is doing bad stuff.
You cannot "just quit" the military as an employer.
Ignoring those orders means jail.
What you appear not to realize is the real fraud of this whole fake system; where the top defraud everyone else with "money printing", which they then use to bail out themselves and spend through government spending, which goes to themselves also through several channels like giving it to the bottom, which spends it on products/service that percolate up, on nepotistic corrupt government contracts to themselves, etc.
That's why the amount of government spending and debt is in direct lockstep with the accumulation of wealth of the top whatever percentage you want to use as a cutoff.
It's more complex than that, but that's the simplest form and most people don't even have a clue that even that is how the system actually works. They just see the inflation that causes products to get more expensive as their money is being defrauded away through essentially counterfeiting.