“撤军”常见的英文表达是 withdraw troops 或 withdrawal of troops。
withdraw troops：这是一个动词短语，强调“撤走军队”这一动作。例如：The government decided to withdraw troops from the conflict zone.（政府决定从冲突地区撤军。）
withdrawal of troops：这是一个名词短语，侧重于描述“撤军”这一行为或事件。例如：The withdrawal of troops marked the end of the long-standing military presence in the region.（撤军标志着该地区长期军事存在的结束 。）