The Westerlands

299AC

 * Tywin Lannister raises an army after his son Tyrion is kidnapped by Catelyn Stark, and orders Gregor Clegane to raid the Riverlands. Lord Hand Eddard Stark sends men under the command of Beric Dondarrion to deal with the Lion’s dog.
 * When King’s Landing is besieged, Tywin and Jaime Lannister march east to the capital. The new Lord Edmure Tully and his Riverlander army cut him off on the Gold Road, and defeat their army. Both Tywin and Jaime are killed in the battle, and with Tyrion Lannister missing, Kevan Lannister becomes the Lord of Casterly Rock.
 * As Edric Baratheon becomes King, House Lannister finds its influence in the capital quickly fading under the regency of Lord Regent Stannis Baratheon, though he keeps things relatively balanced between each of the regions.
 * Cersei Lannister and her son Joffrey Waters are executed, Myrcella Waters is sent to Dragonstone as Lady Shireen Baratheon’s lady-in-waiting and to act as a hostage. Tommen Waters is given to Lord Renly Baratheon as his squire and hostage.
 * To ensure the West’s loyalty, Kevan Lannister’s daughter Janei is betrothed to Lord Edmure’s firstborn son, Hoster Tully. The boy is born in 301 AC and the two are wed when the Tully heir comes of age.

312AC - The Great Western Reaving
Euron ordered three strikes in Lannisport for the initial invasion. They were to attack at night, under a cover of fog and a missing moon. These initial assaults were successful and in addition to harrying raids on the coast, the westerlands heard the screams of the bleeding city.

With these victories, and the distance between holds, the Ironborn began to threaten other castles in the West.

Unfortunately, that did not last long. Western armies began marching almost immediately, pushing  the ironborn back by into the sea. The Ironborn did not leave empty handed though. Lannisport: the city of riches and women, would remember the screams for years to come.

353 AC - The Targaryen Invasion

 * When the Targaryens invade, Lord Lannister hopes to improve his standing in the eyes of the crown by hurrying to defend Westeros from the Dragons.
 * Young Lord Lannister sets up the siege of Duskendale after Baelor Targaryen captures the city. With the assistance of the Royal Fleet blocking the Duskendale harbour, the Lannister army blockades the city. As reinforcements from Dragonstone and the capital arrive, King Raymont leads a charge into the city, soldiers attacking both from land and sea.
 * The end of the war begins the slow, steady return of House Lannister once more into prominence, though things between their house and the crown are still slightly strained.

360-361 AC Reach-Westerlands Border War

 * The Reach begins to make moves against the West, who are still held poorly in opinion. Several lords from the Reach march armies north and seize Western lands along the border of the Reach and West.
 * Lannister petitions the Crown to ask them to step in and order the Tyrells disband their armies. The plea falls upon deaf ears and Lord Lannister raises an army.
 * The Reach seizes control of Crakehall, and begins to march to Cornfield. House Lannister’s army marches to meet them and their army reaches Cornfield before the Reach army.
 * A bloody battle ensues, many lives are lost on the battlefield, the West wins the battle and pushes the Reach army back towards Crakehall.
 * 360 – 361 AC – Tyrell ‘Rose-gardener’ Lord Elwood sees a chance for the Reach to gain further lands and power by taking Westerlands bordering the Reach. He sends Lord Bennarion Tyrell, his most trusted general, to seize these lands from the West. Bennarion does so, joined by several other Reachlords, capturing Crakehall as the pinnacle of his offensive. At this time, concern creeps up in the court at King’s Landing, and Elwood sends Bennarion to quell any fears there, believing he can finish the war on his own. Because of this, the reach’s best general is missing when the Lord old wardog, the Lord of Casterly Rock, Lucion Lannister hands the Reach its first defeat in battle near Cornfield. With impressive speed and efficiency, Lord Bennarion gathers reinforcements and marches to relieve Crakehall, but arrives too late. Instead, he moves to recapture the castle, but is taken by surprise when sly Lord Lucion the Bold marches his forces out to meet him in the field. The battle quickly turns against the Reachmen, and Lord Elwood calls the retreat. Lucion Lannister is Injured on the fields in the battle when his horse is struck by an arrow, the fleeing beast throws Lord Lucion, breaking the aging lords legs and several ribs. Lucas Lannister is killed during the same battle.
 * 361 AC: Crakehall is besieged by the Western army, and when the time comes, the exiled Lord Crakehall leads the charge into his former castle. He is wounded in the battle, but his son carries him to safety. The Reach army surrenders the castle.
 * Reinforcements from the Reach arrive to find that Crakehall is once more under command of the West. The Reach attempts to besiege the castle, but the now experienced soldiers who wish nothing more than to hold onto their lands strike forth from the castle in a sortie led by Lord Lannister. The Reach army does not expect the Westermen to attack and is caught unawares. In the battle, the West inflicts heavy losses upon their enemy, but takes few of their own.
 * Lord Tyrell orders a retreat, though he vows to himself to one day return.