The military unit which occupied Argentovaria in Late Antiquity is unknown. Only the Legio I Martia is documented in the first half of the 4th century as the border protection force responsible for the section on the Upper Rhine. Argentovaria was probably, as usual for the 4th and 5th centuries, occupied by &lt;a href="limitanei"&gt;limitanei/ripenses&lt;/a&gt; or, more likely during this period, by Germanic Foederati, barbarian allies or mercenaries who were probably part of the army of the Dux Provinciae Sequanicae. One of the most important ancient sources for the disposition of border troops and forts of the 4th and 5th centuries is the "Notitia Dignitatum". In it, however, neither the fort name nor the garrison unit or its commanding officer are given. The discovery of a siliqua from the time of Constantius III (408–411), could be a vague indication that it was reoccupied after the devastating invasion of the Vandals and Suebi in 406.