These two young men risked their lives to save other lives & make sure the world would know the horrors of Auschwitz where the Nazis tortured and killed Jews......they industrialized the killing of fellow human beings.
Then to ingeniously and successfully escape and finally tell their story, people didn't believe them. In fairness, whaat they spilled out seemed so farfetched to normal folks it took a while for them to be convinced.
While the deportations and killings didn't stop as soon as they had hoped, FINALLY the Germans halted the trains to Auschwitz. In the end their actions ended up saving 1000's of lives.
Still young, I'd say these two young men has lived their lives well so far! Each went on to live as normal as possible lives after the war.... a miracle in itself.

The one who told the world was Witold Pilecki he volunteered to go to concentration camp to see what is happening there.
"Pilecki’s plan was simple. He would get himself arrested, get thrown in Auschwitz and then start gathering and smuggling out intelligence about the place. He presented his plan to infiltrate the camp to his superiors in the Autumn of 1940, and they eagerly accepted." His superiors in AK (Polish Underground Army) sent reports to England as soon as they got them, but Pilecki reports were inconvenient for Allies and they pretended for long time they did not know about what was happening in the german camps.
"Pilecki’s first report to reach London arrived in the Spring of 1941"

The Auschwitz Volunteer: Beyond Bravery

This brief documentary provides a glimpse into the depravity of man. After reading Rudolf Vrba's book, I escaped Auschwitz, it was reassuring to notice a few critical observations and detailed notes memorized and relayed to the public who were kept in the dark about these atrocities. The movie introduces a key player in Rezso Katzner and his deal with the devil to save a select few. Read the book as it provides an excellent first-hand account of what transpired during the holocaust.

You should follow this up reading his account and listening the extensive interviews done by Claude Lanzmann, the French film director who produced Shoah. They're available online at the Holocaust museum.

There was nothing boring about this documentary. It's the kind of documentary that will keep you on the edge of your seat but unlike a fictional movie, there was no happy ending. It is sad that the main character's efforts to save all of those people didn't happen, but life is so precious, even if one life is saved then all of his efforts were worth it.

I fell asleep while watching this movie... It moves much too slow.