Octavians conquering of Segestica, start the roman rule in the Pannonian area. The early history and military actions are well known in the period between 35. B.C. and the first half of the 1st century AD when roman legions leave Siscia. The period between the 1st and 4th centuries is filled with unkown and perplexity about the link between the history of the city and the army. This paper presents problems in deteremining this dana and offers some potential soultions by how much the material allows it. After the legions leave, the army's pressence is made out of beneficiarii consularis, the members of the river fleet, along with some army regiments that have stayed in the area or have through it. Most of the finds regarding military equipment has been found outside of archeological context, however it stills offers certain insights that help with resolving the issues regarding the roman army in Siscia.