《宋史·列传·卷一百一十七》
敌兵攻打开封城，李纲亲自督战，他招募健壮勇士从城上用绳子吊下去发动袭击，杀死敌人酋长十余人，士兵数千。
敌兵攻城，纲身督战，募壮士缒城而下，斩酋长十余人，杀其众数千人。
When the enemy battered Kaifeng's defenses, Li Gang personally supervised the battle. He enlisted strong and brave warriors to descend the city walls by rope, who then launched an attack that killed ten enemy chieftains and thousands of soldiers.
<s>[INST] Kindly elucidate the central themes in this passage in English: 敌兵攻城，纲身督战，募壮士缒城而下，斩酋长十余人，杀其众数千人。 [/INST] When the enemy battered Kaifeng's defenses, Li Gang personally supervised the battle. He enlisted strong and brave warriors to descend the city walls by rope, who then launched an attack that killed ten enemy chieftains and thousands of soldiers.</s>
Kindly elucidate the central themes in this passage in English: 敌兵攻城，纲身督战，募壮士缒城而下，斩酋长十余人，杀其众数千人。
user
When the enemy battered Kaifeng's defenses, Li Gang personally supervised the battle. He enlisted strong and brave warriors to descend the city walls by rope, who then launched an attack that killed ten enemy chieftains and thousands of soldiers.
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