野の合がっ戦せん

noun

open-field battle; battle in the open

Refers to a military engagement fought on an open field, as opposed to a siege or ambush. The word is somewhat literary and evokes pre-modern warfare.

• 戦せん国ごく時じ代だいの野の合がっ戦せんでは、鉄てっ砲ぽうが重じゅう要ような役やく割わりを果はたした。

  In open-field battles of the Warring States period, firearms played an important role.

• この小しょう説せつには、大だい規き模ぼな野の合がっ戦せんの場ば面めんが何なん度ども出でてくる。

  This novel features several large-scale open-field battle scenes.