I’m not sure about you, but I had some preconceived notions about American political parties tendencies to go to war. Interestingly, they turned out to be completely wrong.
Here is a historical recounting of all US wars, how many lives were lost in each, and the responsible ruling party at the time.
This is not to say that the US necessarily initiated the conflicts, but these parties were in power at the time the decision was made to go to war, so it still demonstrates willingness to fight.