I'm not aware of the details of the Vietnam war. If you imply that I would have implied Nort Vietnamese soldiers were heros, then you are wrong.
No I do not think the Germans in WW I were heros and I don't think the ones fighting in 1870 were heros, even when I consider that war not as criminal.
The soldiers of the Red Army in WW II may have earned such a title, but so far I have never used it. I have however used it already to describe African American soldiers in WW II, who fought not only like every other American in WW II, for the freedom of foreign countries, but as well for their own country, where they had not full citizen rights, and for the economic wellbeing of their country, of which they hadn't the chance to fully participate.
NB - it is fine when Americans read this. I don't complain. But when they are insulted by the incredible denial of respect for military service I portray, it is their own problem. Der Amerikaner ist die Orchidee unter den MenschenVolker Pispers
As said elsewhere in the thread, Nazi Germany was a unique combination of truly horrible combined with extreme aggressiveness in a major world power.