When Gabriella Major was 2 years old, she and her family were rounded up and held captive in a newly established ghetto in Debrecen, Hungary. The year was 1944, and the Nazis had just invaded. After several months fighting off starvation and disease, they were placed in cattle cars headed toward Auschwitz—only to be diverted. “By some miracle, we didn’t wind up in Auschwitz,” Major says. “Twenty-eight members of my family were murdered in Auschwitz. We wound up in a concentration camp in Austria near Vienna called Strasshof.” Strasshof was a forced labor camp that subjected prisoners to “vicious” treatment,...