In a sense, the Horst Wessel Song was an
official national anthem. The following description from David's National Anthems Page is historically correct:
Quote:The "Horst-Wessel-Lied" was recognised as a national symbol by a law issued on May 19, 1933, after having been adopted as the party song of the Nazi party in 1931. Therefore it had an equal status with the "Lied der Deutschen", so in fact Nazi Germany had a double anthem, consisting of the first verse of the "Lied der Deutschen", followed by the "Horst-Wessel-Lied". The anthem was prohibited in use by the allies in 1945, and this fact remains in Germany today.