Johann Jacob von Wallhausen

Johann Jacobi von Wallhausen (; – 20 October 1627) was a German soldier and writer.

Life Wallhausen was born in the village of Dautphe. His family name was Jacob and his original surname was Tautphoeus, after his birthplace. He adopted the name von Wallhausen after the town of Wallhausen, where his father, Justus Jacobi, served as the Lutheran pastor. In 1596, he was a student at the Gymnasium Philippinum. He later attended the University of Marburg. These include: Kriegskunst zu Pferdt (1616), translated into French (1617) Romanische Kriegskunst (1616), an edition of the De re militari of Vegetius, also translated into French under the title La milice Romain (1616) Ritterkunst (1616), translated into French (1616) Manuale militare (1616) Archiley-Kriegskunst (1617) Kriegskunst von Feuerwercken (1617) Corpus militare (1617) Camera militaris oder Kriegskunst Schatzkammer (1621) Defensio patriae oder Landrettung (1621)

According to Wallhausen, "with the exception of Theology, the art of war surpasses all the other arts and sciences, liberal as much as mechanical". He wrote in German and his works were rushed to publication, which resulted in numerous printer's errors. They are copiously illustrated with engravings by and under the direction of Johann Theodor de Bry. He promised an illustrated translation of Aelianus Tacticus into German and French, but the work never appeared. His well illustrated edition of Vegetius in German and French shows that he was a practical soldier who appreciated Vegetius for his emphasis on training and drilling. The academy at Siegen would almost certainly have been based on his interpretations of Vegetius.