Here is a list of engagements: https://en.wikipedia.org/wiki/Timeline_of_United_States_mili...

Taking "2017 Shayrat missile strike" as a random example (https://en.wikipedia.org/wiki/2017_Shayrat_missile_strike) shows that specific mission had at least 9 civilian casualties.

So even if not intended, the US army are in fact using violence against civilians (like probably most armies in the world)