Burning of the Iron Islands

"The Iron Throne commanded the Red Kraken to stop reaving and when he didn't, a mistress opened his throat as he slept. While his sons squabbled, the Lannisters sent their soldiers to the Iron Islands. Thousands of men, women and children were put to the sword and scores of villages and hundreds of longships were put to the torch. The glorious return to the Old Way had lasted two years."

- Euron Greyjoy

In the books
In 134 AC Jason Lannister's widow, Johanna Lannister, avenged Dalton's raids by having her men-at-arms sail to the Iron Islands with the fleet of Ser Leo Costayne, the lord admiral of the Reach. One of Dalton's salt sons was taken captive, gelded, and made into Casterly Rock's new fool.