I am a Sorceror, without equal.

Your magical abilities outstrip that of any of your allies or enemies. Merely knowing that you are a part of the attacking army or fleet is enough to get most to surrender.
Magic runs deep through your physical body as well as your soul, and you guess that the changes wrought by it's presence mean possible immortality. Indeed, over the past twenty years of your service to the throne, you haven't even aged a day.
In fact, you look to be even younger; late twenties and in the prime of life.
This has allowed you to become even more adept at the use of the magicks which won the war.
But what kind do you specialise in?