Do you think it was justifiable to use national troops along with United troops in conflict zones?

It depends on the cause, if we're just there to reap money at the cost of human life then it is not justifiable. If we're intervening in a conflict between two nations, we should just let it play out or support the country that is right, in our eyes. I'll use Taiwan as an example, if China makes a move on Taiwan then the United States is going to come up and say no, and if the Chinese don't back off then you better know that war is going to start. Point being, it's justifiable but it also isn't, it all depends on the situation.

Explanation:

julius caesar turned the roman republic into the roman empire by coming in and taking the "dictator" role during the time of a civil war (elites vs lower classes) winning battles and reputation, then declaring him dictator for life

hope this : )