It's hard to imagine in today's world that America will ever take part in another "just" war. The kind of fight where you actually root for the American soldier to vanquish the enemy, with no doubts in your mind as to right or wrong.

Ruibcon3 has a video preview of About Face, the story of newly arrived Jewish immigrants who returned to continental Europe to fight against the Nazis in WWII. Would anyone question these soldier's duty to do what they had done?

Perhaps this question is easier to answer with the hindsight of 60 years of peace in most of Europe.