 Friedrich Christian thus became heir apparent, and when his father died on 12 February 1932, he succeeded as Head of the Royal House of Saxony

In 1933, remembering the prolonged link between the Electorate of Saxony and their country, the Polish Government wanted to propose him to become the new King of Poland, but the rise of Adolf Hitler and the upcoming of World War II prevented this from happening.At time, Friedrich Christian and his family lived in Bamberg, where he led the Knights of St. Mary.In 1937, the family moved to Wachwitz Castle in Dresden-Wachwitz, where they lived until 1945.