《金史·列传·卷七十一》
襄挑选二十名善射的骑兵，率领众人从贼军后面袭击他们，贼军不能支撑，襄又乘机指挥部队攻击贼军的一边，贼军才退却。
襄以善射者二十骑，率众自贼后击之，贼不能支，乘势麾军击其一偏，贼遂却。
Xiang selected 20 skilled cavalry to lead the attack on the rebel army from behind, and the rebel army could not resist. Xiang took the opportunity to command his troops to attack the rebel army from one side, and the rebel army retreated.
<s>[INST] Kindly elucidate the central themes in this passage in English: 襄以善射者二十骑，率众自贼后击之，贼不能支，乘势麾军击其一偏，贼遂却。 [/INST] Xiang selected 20 skilled cavalry to lead the attack on the rebel army from behind, and the rebel army could not resist. Xiang took the opportunity to command his troops to attack the rebel army from one side, and the rebel army retreated.</s>
Kindly elucidate the central themes in this passage in English: 襄以善射者二十骑，率众自贼后击之，贼不能支，乘势麾军击其一偏，贼遂却。
user
Xiang selected 20 skilled cavalry to lead the attack on the rebel army from behind, and the rebel army could not resist. Xiang took the opportunity to command his troops to attack the rebel army from one side, and the rebel army retreated.
assistant