塹ざん壕ごう戦せんざんごうせんMeanings1nountrench warfareRefers to the style of warfare where opposing armies fight from trenches, especially associated with World War I.第だい一いち次じ世せ界かい大たい戦せんでは塹ざん壕ごう戦せんが広ひろく行おこなわれた。Trench warfare was widely conducted in World War I.
