In the museum at Segedunum, there are re-constructions of a barrack room and the shrine within the Principia where the military standards and trophies were kept.
For more information on the draco standards carried by Roman cavalry see these previous blog posts:
https://petesfavouritethings.wordpress.com/2013/03/05/roman-cavalry/
https://petesfavouritethings.wordpress.com/2014/04/13/the-draco/