だい日本 にっぽん帝国 ていこく陸軍 りくぐんじゃありませんでした
dainipponteikokuri kugunja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 大日本帝国陸軍

1. Was not of the Imperial Japanese Army.; Was not a member of the Imperial Japanese Army.

Past/Perfective
Negative
Polite
Terminal Form