O ASOIAF apresenta uma 'guerra contra um homem'?

Se você quer dizer guerra, como na guerra entre reinos separados, em vez de uma guerra civil, essa será a era pré-conquista. O caso mais próximo é a guerra de Lannister-Hoare travada por vingar a Princesa Lannister que havia sido mutilada pelo Rei Ironborn (que por acaso era filho daquela princesa). Lannisters não pretendia conquistar ou governar as Ilhas de Ferro no rescaldo e, de fato, retirou-se após os eventos explicados abaixo. Assim que a tia do Rei Leão foi vingada e o Rei Ironborn enforcado, sua missão foi completada no que lhes dizia respeito.

É destaque em O Mundo do Gelo e do Fogo .

As facções beligerantes eram:

1. Westerlanders sob a Casa Lannister
2. Ironborn sob a Casa Hoare nominalmente e o clero Ironborn de fato

As figuras importantes na luta foram:

• O rei Harmund, o belo
• o Picanço
• Rei Hagono Hoare
• Rainha Mãe Lelia Lannister, Princesa do Rock
• sobrinho de Lelia, sem nome King of the Rock
• Sor Aubrey Crakehall, um general Lannister

A Guerra dos Doze Anos ¹

O problema começou com o pai de Hagon, King Harmund II Hoare. Ele era um estudioso e amava viajar. Então, apesar de tudo, ele não era o típico Rei Ironborn. Isso pode ser atribuído ao fato de que ele foi criado como guarda pelos Lannisters em Casterly Rock. Quando seu pai morreu, seu pai adotivo, o Rei Lannister, deu-lhe a mão de sua filha, Princesa Lelia Lannister, e o Jovem Rei retornou às Ilhas com sua Rainha da Groenlândia.

His son Harmund the Haggler shared his love of reading, and became renowned as a great traveler. He was the first king of the Iron Islands to visit the green lands without a sword in his hand. Having spent his youth as a ward of House Lannister, the second Harmund returned to Casterly Rock as a king and took the Lady Lelia Lannister, a daughter of the King of the Rock and "the fairest flower of the west," for his queen. On a later voyage he visited Highgarden and Oldtown, to treat with their lords and kings and foster trade.
_{TWOIAF - The Black Blood}

Ele também criou seus filhos, Harmund Junior e Hagon, à luz dos Sete, em vez de seguidores do Deus Afogado. Embora não houvesse rebeliões contra ele, o único movimento errado de seu filho provou ser a gota d'água.

Seu filho declarou que daqui em diante os invasores iranianos seriam enforcados como piratas, que os escravos seriam proibidos e que as "esposas de sal" seriam consideradas amantes e seus filhos bastardos, provavelmente sob influência de sua mãe. Ironborn se levantou em rebelião para expulsar este infiel rei.

His own sons were raised in the Faith, or King Harmund's own peculiar version of it. Upon his death, the eldest of them ascended the throne. Harmund the Handsome (influenced, some say, by his Lannister mother, the Dowager Queen Lelia) announced that henceforth reavers would be hanged as pirates rather than celebrated, and formally outlawed the taking of salt wives, declaring the children of such unions to be bastards with no right of inheritance. He was considering a measure to end the practice of thralldom on the isles as well when a priest known as the Shrike began to preach against him.

Other priests took up the cry, and the lords of the isles took heed. Only the septons and their followers stood by King Harmund, and he was overthrown within a fortnight, almost bloodlessly. What followed was far from bloodless, however. The Shrike himself tore out the deposed king's tongue, so he might never again speak "lies and blasphemies." Harmund was blinded as well, and his nose was cut off, so "all men might see him for the monster he is."
_{TWOIAF - The Black Blood}

King Hagon assumiu o trono quando seu irmão mais velho, Harmund, foi deposto por um levante religioso dos Ironborn. Ele permitiu que os rebeldes mutilassem sua mãe, a princesa Lelia Lannister do Rock.

King Hagon, soon to be known as Hagon the Heartless, even permitted the mutilation of his own mother, Queen Lelia, the Lannister "whore" who was blamed by the Shrike for turning her husband and sons away from the true god. Her lips, ears, and eyelids were cut off and her tongue ripped out with hot pincers, after which she was bundled onto a longship and returned to Lannisport.
_{TWOIAF - The Black Blood}

Quando ele mandou sua mãe mutilada de volta à Rocha, seu sobrinho, o Rei da Rocha, chamou suas bandeiras e declarou guerra para vingar sua tia.

The King of the Rock, her nephew, was so angered by this atrocity that he called his banners.
_{TWOIAF - The Black Blood}

Ser Aubrey Crakehall , o General do Exército Westerlander derrotou os Ironborn e enforcou Hagon depois de mutilá-lo da mesma forma. como ele havia mutilado a Princesa Westerlander.

The war that followed left ten thousand dead, three-quarters of them ironborn. In its seventh year, the westermen landed on Great Wyk, smashed Hagon's host in battle, and captured his castle. Hagon the Heartless was mutilated in the same fashion as his mother before being hanged. Ser Aubrey Crakehall, commanding the Lannister armies, ordered that Hoare Castle be razed to the ground, but as his men were looting, they came upon Harmund the Handsome in a dungeon. Crakehall briefly considered restoring Harmund to his throne, Haereg claims, but the former king was blind, broken, and half-mad from long confinement. Ser Aubrey granted him "the gift of death" instead, serving Harmund a cup of wine laced with milk of the poppy.
_{TWOIAF - The Black Blood}

Isso terminou oficialmente a guerra. Ser Aubrey, no entanto, não voltou para casa e se declarou rei das Ilhas de Ferro. O Rei Lannister, entretanto, não aprovou isso e, portanto, as forças da Westerlander se retiraram para as Terras Ocidentais. Ironborn derrotou Ser Aubrey em poucos meses.

Then, in an act of mad folly, the knight decided to claim the kingship of the Iron Islands for himself. This pleased neither the ironborn nor the Lannisters. When word reached Casterly Rock, the king called his warships home, leaving Crakehall to fend for himself. Without the power and wealth of House Lannister to prop him up, "King Aubrey" saw his power crumble quickly. His reign lasted less than half a year before he was captured and sacrificed to the sea by the Shrike himself.
_{TWOIAF - The Black Blood}

No entanto, por algum motivo, possivelmente a retomada das hostilidades pelos Ironborns para vingar sua derrota humilhante (porque eles são realmente estúpidos quando se trata de seu orgulho), os Lannister e os Ironborn estavam em guerra novamente, embora em um desmatamento. moda e eles permaneceram em guerra pelos próximos cinco anos após o qual assinaram um acordo de paz presumivelmente em favor de Lannisters.

The war between the ironborn and the westermen continued in a desultory fashion for five more years, finally ending in an exhausted peace that left the Iron Islands impoverished, burned, and broken. The winter that followed was long and harsh, and is remembered on the isles as the Famine Winter. Hake tells us that three times as many ironmen perished of starvation that winter than had died in the battles that preceded it.
_{TWOIAF - The Black Blood}

_{1. Este não é o nome oficial da guerra, mas eu estou chamando isso porque levou Lannisters sete anos para esmagar o Ironborn e levou o Ironborn mais cinco anos para perceber eles foram derrotados.}

    

Em suma, a premissa da sua pergunta é falha, já que você está fazendo referência à série errada de livros.

Olhando para a pergunta original < o que provocou isso, eu pensei que soava mais como a Guerra Aiel na série Wheel of Time de Robert Jordan, em vez de A Song of Ice and Fire. (Como fez @ChrisD em seu comentário ). Então, eu olhei em Worldbuilding e a Guerra de Aiel só é discutida uma vez em esta resposta .

Aqui está a frase TV Tropes que inclui:

When King Laman of Cairhien cut down the Avendoraldera, the tree that the mysterious desertdwelling Aiel-people had given his people as an sign of friendship hundreds of year earlier in order to carve himself a throne, four of the twelve Aiel Clans crossed the Dragonwall and invaded the Westlands. For the Westlands It was the greatest war they had seen in centuries, uniting almost every country under one banner that was stil unable to stop the Aiel horde. To the Aiel it was simply the execution of the Oathbreaker King Laman, and once they succeded in that they turned around, returning to their desert without giving any of the lands they had conqured a second glance.