Board Thread:Lore Discussion/@comment-85.74.137.231-20130605091958/@comment-10207438-20130606051411

Legate Alexandros wrote:

Nafaliargus was used by Imperial forces against crowns at Stros'Mkai and then Cyrus the Redguard killed it (Which is also doubful, since only Dragonborn can trully kill a dragon). It may be so, that Nafaliargus is actually the dragon depicted on the banner of Empire as it is a depiction of Red Dragon on the black field. not exactly doubtful, he probably did kill it in the sense of destroying the body, but only a dragonborn can truly kill a dragon by also destroying the soul of a dragon, because otherwise they can be brought back to life by whatever magic/shout Alduin used.