When Luka treats the two old Croatian man, one of them, Guter, tells him the other, Doric, was a member of the Ustasha, which Luka describes as similar to the Gestapo. During World War II, northern Croatia was occupied by the German army. The Ustasha were the fascist army of Croatia, which collaborated with the Germans. In 1941, the Ustasha was put in charge of the Independent State of Croatia by the Axis Powers. Thousands of Croatian Jews were killed at Jasenovac Concentration Camp at the hands of the Ustasha.