In Roman Dacia, an estimated 50,000 troops were stationed at its height. At the close of Trajan’s first campaign in Dacia in 102, he stationed one legion at Sarmizegetusa Regia. With the conclusion of Trajan’s conquest of Dacia, he stationed at least two legions in the new province – the Legio IV Flavia Felix positioned at Berzobis, and the Legio XIII Gemina stationed at Apulum. It has been conjectured that there was a third legion stationed in Dacia at the same time, the Legio I Adiutrix. However, there is no evidence to indicate when or where it was stationed. Debate continues over whether the legion was fully present, or whether it was only the vexillationes who were stationed in the province.