<page_title> List of conflicts by duration </page_title> <section_title> Conflicts </section_title> <table> <cell> Three Hundred and Thirty Five Years' War <col_header> War </col_header> </cell> <cell> 335 years <col_header> Duration </col_header> </cell> </table>
Three Hundred and Thirty Five Years' War is the longest war with 335 years.