 In some infamous cases, members of Baudienst were used to prepare graves for victims of German mass executions (of Poles, Jews and other victims of the Third Reich) or to destroy Jewish houses and hiding places.In the General Government, working was obligatory for any male Pole from 18 to 60 years old; later in the occupation this range extended to youth from 14 years old.Baudienst service itself was an obligatory service for Poles aged 21–22.