The Historic Battle Dunk Was Looting And Egg Was Singing About (The Redgrass Field)

In A Knight of The Seven Kingdoms we see Egg singing a song about a famous battle and later see Dunk and his friend Rafe looting the same battle. The Redgrass field was one of the most important battles in the history of westeros as we know it and saved House Targaryen. Baelor and Maekar became the hammer and the anvil and Bloodraven aka the three eyed crow or three eyed raven killed Daemon blackfyre and ended the first blackfyre rebellion.