Uprising in Sunspear

"Unopposed, Aegon claimed Dorne for his own, but as soon as he returned to King's Landing, his castellans were hurled off towers and his royal garrison vanished in the desert, never to be seen again. Except perhaps when the winds change and the sands cough up old bones and armor."

- Varys The Uprising in Suspear was part of the Dornish campaign to oppose Aegon Targaryen's invasion, attacking by surprise the garrisons left by the invaders in the castles they occupied in Dorne.