'We had to sign an affidavit ... [saying] we never went through what we went through. We weren't supposed to say a word'

I've been fascinated since childhood by WWII Europe. My shelves are lined with personal accounts; the first books I read on my own were The Rise and Fall of the Third Reich and Corrie Ten Boom's The Hiding Place.

But many personal accounts were supressed "to protect escape and evasion techniques and the names of personnel who helped POW escapees," said Frank Shirer, the chief historian at the U.S. Army Center for Military History.

Thankfully, brave people like Anthony Acevedo, a 20-year-old medic who was captured and sent to a Buchenwald satellite camp, are sharing their experiences for modern generations - crucial to understanding how such inhumanity can flourish and its untenable price.

That is our true hope for 'never again.'