野战用英语可以翻译为 "field warfare" 或 "guerrilla warfare." 来自英文 "guerrilla," 该词源于西班牙语 "guerrilla"，意思是"小游击队"。例句：

The war involved both regular army units and guerrilla forces engaging in field warfare.

The guerrilla warfare tactics used by the rebels proved effective in disrupting the enemy's supply lines.

中文翻译：

这场战争涉及常规军队和游击队在野战中作战。

叛军采用的游击战术在打乱敌人的供应线方面表现出色。