Standing at the very spot where her brother was shot dead by Nazi soldiers in a French village, Faye Campbell couldn’t help but be taken back to the scene inside an Oklahoma grocery store nearly seven decades ago. She was 16, tagging along with her mother on a typical trip to the grocery in tiny Carney, Okla. But in walked a man with an envelope in his hand that would change their lives forever. “I remember that day so plain,” she said with a slight yet sweet southern drawl. “When I saw that postmaster come in carrying that letter, I …