As a subordinate general (or hypostrategos), Heraclius served under the command of Philippicus during the Battle of Solachon and possibly served under Comentiolus during the Battle of Sisarbanon.
Sebagai seorang jenderal bawahan (atau hypostrategos), Heraklius bertugas di bawah komando Filippikos selama Pertempuran Solachon dan mungkin bertugas di bawah Komentiolos selama Pertempuran Sisarbanon.