When Laila Stieler’s script for “From Hilde, With Love,” which world premiered Saturday in competition at the Berlinale, first came to director Andreas Dresen he was a little reluctant to take the project on. The issue was not the script but the subject-matter: set in Nazi-era Berlin, “From Hilde, With Love” is a love story about two real life members of the pro-Communist, German resistance movement known as the Red Orchestra, Hilde and Hans Coppi. More than 50 members of the group were guillotined in Berlin’s Plötzensee Prison between 1942 and 1943, including the Coppis. Hilde gave birth to her...