The signifer (flag/sign bearer) of the group Leg XI CPF ( [link]
The unit emblem he is carrying depicts Neptune riding on a fish - one of the signs that the Legion XI probably carried. The wolf skin on the helmet was supposed to transfer the animals abilities/attributes on the unit who's sign the signifer carried. Any kind of large(r) predator was used for that, most commonly wolves, lions and bears, but also other large cats like leopards and cheetas.
Taken during the "Römerfest" in Hüfingen (Germany), a former founding by the Romans who had built there a castle (around the years 37 to 45 AD), bath and other buildings which later developed into a small town then known as "Brigobannis". The castle was part of the Danubian Limes in the province of Germania Superior (number 41 on this map: [link] ).
Stamped bricks mark the Roman bath to be one of the oldest military baths north of the Alps - it was built around 69 to 101 AD by soldiers of the Leg XI CPF which was mostly stationed in the province Helvetia (Swizerland) - headquartered in Vindonissa (Windisch) - but also manned outposts along the limes in Germania Superior and Raetia.