Hiding from the Nazis. Hiding people at addresses where they are not registered as residents. In some cases secret spaces were built for people to hide in. In other cases (especially with children) those in hiding were absorbed into their foster family. In such cases the individuals usually had forged identity papers. When people in hiding were caught, they would be deported or shot on the spot. Those hiding them were often also deported. In early 1943 about 25,000 Jews were in hiding. Thousands of them were betrayed or located by the Kolonne Henneicke and deported to concentration and extermination camps via the prison barracks at Westerbork.