For 10 points, name this Byzantine military organization, which was responsible for acting as the emperor's bodyguards and heavily recruited warriors from Scandinavia.
During the Battle of Beroia, members of this military organization hacked through a wagon fort, resulting in a decisive defeat for the Pechenegs. Members of this military organization were probably responsible for creating the inscriptions that deface the Piraeus Lion. The Alexiad recounts how Alexios I was advised not to ask the Immortals or this other military organization to (*) betray Nikephoros III. This military organization was initially formed after Basil II received military aid from Vladimir of Kiev. Harald Hardrada served in this military organization before taking the throne of Norway. For 10 points, name this Byzantine military organization, which was responsible for acting as the emperor's bodyguards and heavily recruited warriors from Scandinavia.
During the Battle of Beroia, members of this military organization hacked through a wagon fort, resulting in a decisive defeat for the Pechenegs.
Varangian Guard [or Varangians; prompt on Byzantine military or equivalents]