LitCharts assigns a color and icon to each theme in Code Name Verity, which you can use to track the themes throughout the work.
Friendship
War, Women, and Gender Roles
The Horrors of War
Resistance and Courage
Storytelling
Summary
Analysis
On official Gestapo stationery, Ferber writes that this is his final warning that Julie is an NN prisoner, and she must be sent to Natzweiler-Struthof. There she will be executed by lethal injection if she survives six weeks of experimentation. Von Linden is not to show her any compassion, or he’ll be shot.
This note suggests that von Linden has been disobeying his superiors by letting Julie survive this long and tell her story. Von Linden may, on some level, have felt compassion for her—but judging by the note, he’s not going to be able to help her any longer.