I could not blame your son.
I was in war theatre, and had the opportunity to discuss it 20 years later with belligerants and former UNO French soldiers - both rank-and-files and one high-ranking officer who turned excellent historian.
We all have sincere and diverging "truth" about the same events.
I understand the work of historian has confronting primary sources and available facts to give as accurate a depiction of events as possible - keeping in mind unavoidable methodological, national and personal biases.