Of soldiers: exhausted by having to march too far or for too long.
Mid 19th century; earliest use found in Horace Greeley (1811–1872). From overmarch + -ed.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。