“殿后”常见的英文表达是 “bring up the rear” 或 “act as rear guard” 。
“bring up the rear” 是一个比较常用的短语，形象地表达在队伍、群体等最后面的位置或承担殿后任务。例如：The scout team went ahead, and the main force brought up the rear.（侦察队先行，主力部队殿后。）
“act as rear guard” 侧重于表达执行殿后职责、起到后卫保护作用这一行为和角色 。例如：The soldiers were ordered to act as rear guard to ensure the safe retreat of the rest.（士兵们接到命令殿后，以确保其余人员的安全撤退 。）