“War till the end of the world”

“War till the end of the world” is the doctrine Catalina of Aragon learns from Isabella of Castile and later revises through her own exercise of power. It begins as a declaration that Christian rule requires an unending struggle against Muslim powers; its decisive reversal comes when Catalina, victorious over Scotland, refuses to turn military success into another generation of war.

Origin in Granada

The phrase grows out of Catalina’s memory of Granada after its conquest. Watching Moors leave the city with their belongings on mules, she asks Isabella whether the people driven away might return. The scene makes victory seem provisional: the flag of St. James flies over the fort, but Catalina fears that defeat will merely send the enemy elsewhere before another invasion.

Isabella answers that Catalina must be ready to fight wherever and whenever the conflict returns. She presents the struggle as lasting until God ends it, and casts her daughter’s placement in England as part of a wider political and religious duty. Catalina is to defend her husband’s lands and keep England allied with Spain, just as her sisters are placed in other dynastic alliances. In this account, marriage and diplomacy are not separate from the war: they are means of preparing a Christian kingdom for it.

A doctrine carried into marriage and rule

Catalina accepts the teaching as a young princess. She understands her marriage to Arthur as serving an unbreakable alliance between Spain and England, and imagines England’s ships and wealth helping Spain confront France and carry the crusade beyond Europe. The conflict is not limited to one battlefield or generation in her outlook; she fears that the kingdoms opposed to Christendom extend beyond any known horizon.

The same belief shapes her answer when Henry VII suggests that Christians might live in peace despite differing names for God. Catalina dismisses that possibility, repeating her mother’s view that the struggle between good and evil will continue to the end of time. The phrase is thus more than a prediction of repeated fighting: it has become a rule for interpreting religious difference, dynastic duty, and the purpose of political alliances.

The reversal in Scotland

Years later, during a campaign against Scotland, Catalina deliberately tests that inherited rule against the consequences of victory. With the Scottish king dead and the country open to attack, she recognizes that a commander could exploit the defeat and devastate the realm for a generation. She recalls that her parents might have ordered such an advance, but reaches the conclusion that they were wrong.

Her reasoning overturns the doctrine from within. A state of continual warfare harms victor as well as defeated; devastation leaves conditions for further suffering, and the next generation would inherit the conflict. Catalina connects this prospect to her parents’ war against the Moors: their victory, she believes, won a battle without ending the larger struggle. The expression’s certainty gives way to a different conclusion: war cannot end war; only peace can end it.

From victory to a proposed peace

Catalina makes the change practical. After receiving news of the victory, she orders a messenger to thank Lord Surrey and tell him to let the Scottish soldiers surrender their arms and depart in peace. She also says she will write to the Scottish queen and offer peace on the condition that they become good sisters and neighbors. Rather than use victory as an excuse for further violence, she seeks to make it the beginning of a lasting settlement.

The change is significant because Catalina does not make it from a position of military weakness. She believes the English have won and could continue the campaign, yet chooses to limit what victory permits. “War till the end of the world” consequently marks both the conviction she inherits and the conviction she outgrows: first a call to permanent readiness, then a warning about the cycle of hatred that such readiness can perpetuate.