大艦 だいかん巨砲 きょほう主義 しゅぎじゃありませんでした
daikankyohōshugijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 大艦巨砲主義

1. It was not gunboat diplomacy.; It wasn't a belief in massive battleships and artillery.

Past/Perfective
Negative
Polite
Terminal Form
Military