Two legionaires holding watch over the camp. In the background the signifer and a third legionaire are passing through.
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.
For more on the reenactment group Leg XI CPF go here: [link]
(page in German)