Nazi hunters have had what they’re describing as their best break in years after discovering immigration files in Brazil that are more than 50 years old. The files identify several hundred Germans who moved to Brazil in the decade after World War II ended. Though most are likely to now be dead, the German government plans to investigate the names. “The discovery will probably be our most important find in recent times,” said Kurt Schrimm, the top German justice official who hunts Nazi fugitives.