<page_title> Size of the Roman army </page_title> <section_title> Late Roman empire (284 - 337) </section_title> <table> <cell> Legions <col_header> Military units </col_header> </cell> <cell> 30 <col_header> Trajan 107 </col_header> </cell> </table>
The Size of the Roman army, under Trajan, was 30 legions.