ABSTRACT In 1213, Pope Innocent III issued his letter Quia maior asking Christendom to rescue the Holy Land. He also appeared to suspend the indulgences offered for fighting in Iberia so that the crusading forces could concentrate their efforts on the venture to Egypt. Despite this, Innocent was unprepared to totally disqualify the Iberian Christian efforts against al-Andalus – a situation that created an artificial separation between Iberian Christians and the rest of Christendom. Notwithstanding, in 1217 when a fleet of northern crusaders arrived in Lisbon, they were invited by its bishop to join an expedition to conquer the Muslim-controlled city of Alcácer do Sal. This article discusses the evidence available to explain what the real status of this campaign was in the eyes of the papacy and the participants themselves within the evolving concept of “Crusade”.

中文翻译：

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1217 年秋，葡萄牙领导的对阿尔卡塞杜萨尔的军事行动是第五次十字军东征的一部分吗？

摘要 1213 年，教皇英诺森三世发表了他的信，要求基督教世界拯救圣地。他似乎还暂停了为在伊比利亚战斗而提供的赎罪券，以便十字军可以将精力集中在前往埃及的冒险上。尽管如此，英诺森并没有准备好完全取消伊比利亚基督徒对抗安达卢斯的努力——这种情况在伊比利亚基督徒和其他基督教世界之间造成了人为的分离。尽管如此，在 1217 年，当一支北方十字军舰队抵达里斯本时，他们应里斯本主教的邀请加入了征服穆斯林控制的阿尔卡塞尔杜萨尔市的远征队。