[1] Arenhold probably joint the Imperial German Navy at the beginning of the 1870s, and left in 1881 as a Kapitänleutnant of the Seewehr to work as a painter.
In Hamburg he took lessons from the painters Heinrich Leitner and Franz Johann Wilhelm Hünten, 1886/87 he was a master student of Hans Gude at the Prussian Academy of Arts in Berlin.
Arenhold preferred oil painting; subjects were merely ships of the Imperial Navy and historical fleets.
He was particularly interested in the pre-history of the Imperial Navy, including the Reichsflotte.
Die Bildenden Künstler aller Zeiten und Völker, Bd.