I think torture is unavoidable. I very much doubt there ever was or ever will be a war where captured enemy officers, or personnel, are not "debriefed".
Say you're a unit commander tasked to assault an enemy position. One of your patrols just happens to have captured an enemy sentry who may very well know the strength and position of their defenses. Are you going to waste your mens lives or are you gonna ask the guy ?
War and torture go hand in hand, and that's it.