caroline tyler shows you how they came together seven decades together. >> reporter: the last time these two men were in the same vicinity, one was 19, the other 20. the year was 1945. it was at the nazi concentration camp in germany. nick hope says there he was a number, not a name, wearing this badge assigned to factory work. >> i was weighing like 80 pounds. but i still have hope in my heart. >> reporter: at least 30,000 prisoners died there. but hope was finally realized in the form of american soldiers. henry was among those who liberated the camp on april 29th, 1945. that day is something the 92-year-old veteran, known as stu, still does not hike like tk about. >> i couldn't go through it again. i couldn't. >> reporter: today, the past came back in a first-time meeting with a grateful 93-year-old, who shared memories, mementos, and a thank you. >> thank you. he saved my life. >> reporter: this gathering included families on both sides. the men's sons met at a holocaust memorial last year. and discovered their dads lived just miles away. now they share a bond. >> praise the lord tha