<page_title> Hans-Joachim Horrer </page_title> <section_title> Bibliography </section_title> <table> <cell> Commanding officer, U-555 30 January 1941 – 25 August 1941 <col_header> Military offices </col_header> </cell> </table>
Hans-Joachim Horrer was assigned to U-555 as commander on 30 January 1941.