Do you really believe the Dems would do less war? They are literally siding with Dick Cheney. They were always very pro-war (eg. Hilary Clinton) but now they don't even hide it and they are embracing the whole "security through strength" and "escalation to de-escalate" in the middle east.
If you look back at the past few presidency (incl. Obama), Trump was far more peaceful. He was the first president in a very long time to not invade a new country. I don't think he does it out of love or empathy, I suspect he just thinks it's a waste of money, but the end result is the same.