Also, Caracalla perhaps felt more comfortable about campaigning in the upper Main because he was not declaring war on any specific historic tribe, such as the Chatti or Cherusci, against whom Rome had suffered grievous losses.
De asemenea, Caracalla probabil s-a simțit mai sigur dispunând de o campanie în Mainul superior, deoarece el nu a declarat război triburilor istorice specifice, cum ar fi chattii sau cheruscii, împotriva cărora Roma a suferit pierderi grele.