だい規模 きぼ戦争 せんそうではありませんでした
daiki bosensōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 大規模戦争

1. Was not a large-scale war.; It was not a large-scale war.

Past/Perfective
Negative
Polite
Formal Register