The police officer Alfred Schulz lived on Pestalozzistraße in Berlin-Charlottenburg during the war. In July 1942 he took in a Jewish acquaintance, Berta Kuller, to his sublet room. He then rented a room in the same building, where Berta Kuller lived under a false name. Schulz also paid for her food.
When the building was hit during an air raid in 1944, the tenants were able to move to nearby Grolmannstraße. There, Alfred Schulz informed his landlady that Berta Kuller was Jewish. As a police officer, Schulz was sometimes deployed in the Große Hamburger Straße assembly camp, where he occasionally received important information from the camp manager Walter Dobberke.
Toward the end of the war, Alfred Schulz appears to have been drafted. Berta Kuller stated that she married him in 1946 after his return from a Russian prisoner-of-war camp.