From the Notitia Dignitatum ( Notitia omnium Dignitatum et administrationum tam civilium quam militarum),early fifth century, which gives the titles of the officers and their units reporting to the Comes Litoris Saxonici.

Dalmatians = An Illyrian tribe
Stablesi =
Fortenses =
Baetasii = from Andalusia
Legio II = a detachment (?)
Tungrii = from Tongres
Turnacencis = from Tournai
Abulci = from Avila, Spain
Exploratores = scouts