The , the State Hereditary Farm Law of 1933, implemented this ideology, stating that its aim was to: "preserve the farming community as the blood-source of the German people" (). Selected lands were declared hereditary and could not be mortgaged or alienated, and only these farmers were entitled to call themselves or "farmer peasant", a term the Nazis attempted to refurbish from a neutral or even pejorative to a positive term. Regional custom was only allowed to decide whether the eldest or the youngest son was to be the heir. In areas where no particular custom prevailed, the youngest son was to be the heir. During the Nazi era, the eldest son inherited the farm in most cases. Priority was given to the patriline, so that, if there were no sons, the brothers and brothers' sons of the deceased peasant had precedence over the peasant's own daughters. The countryside was also regarded as the best place to raise infantry, and as having an organic harmony between landowner and peasant, unlike the "race chaos" of the industrial cities. It also prevented Jewish people from farming: "Only those of German blood may be farmers."