- Kevan Lannister: "Scouts assure us that Robb Stark remains north of Ashemark."
- Tywin Lannister: "The last time the scouts assured us of Stark's movement he lured us into a trap. Which is why my son is his prisoner. Too close to Casterly Rock."
- — Tywin Lannister predicts the inevitable to Kevan Lannister [src]
The northern army led by Robb Stark invades the Westerlands, surprising the host led by Ser Stafford Lannister at Oxcross and annihilating it. With the bulk of the Lannister force stationed at Harrenhal and the remnants of Jaime Lannister's army already scattered, the Westerlands are largely defenseless.
In the books
In the A Song of Ice and Fire novels it is mentioned that Ashemark is easily sacked by Robb's army, and the keep's castellan is killed. Lacking the necessary strength to capture Casterly Rock or Lannisport, the Northern army raids the Westerlands: Galbart Glover and Rickard Karstark raid along the coast, Maege Mormont captures thousands of livestock, and Greatjon Umber - who in the novels remains with Robb - captures the gold mines at Castamere, Nunn's Deep, and Pendric Hills.
- ↑ Season 2 bluray: "War of the Five Kings" feature
|Scourging of the Riverlands||
|The Young Wolf's campaign||
Purple Wedding · Tyrion Lannister (I) · Tyrion Lannister (II) · Tower of the Hand
|Ironborn Invasion of the North||
The Dreadfort · Moat Cailin (II) · Deepwood Motte (II)