At 99, Holocaust Survivor & WWII Veteran Receives Over 400 Thank-You Letters from His Homeland Harry Arnstein survived a concentration camp and served in three armies: the British, Czechoslovak and American. On Saturday, October 10, 2026, the 99-year-old Holocaust survivor and World War II veteran received an unexpected tribute in Roslyn, Long Island: more than 400 thank-you letters from schoolchildren in the Czech Republic and Slovakia. “I neve…