This is the incredible true story behind Quentin Tarantino’s film Inglourious Basterds; a group of Jewish-American refugees of Nazi Germany who boldly went behind enemy lines for vengeance. Through vivid first-person accounts from the extraordinary OSS veterans, gripping dramatic reconstructions, CGI and archive, the intrepid trio’s hair-raising ‘Operation Greenup’ is brought to life, revealing one of the most successful and daring covert operations of World War Two.