だい日本 にっぽん帝国 ていこく陸軍 りくぐんじゃなかった
dainipponteikokuri kugunjanakatta

Noun
Da Copula

The past negative form of 大日本帝国陸軍

1. Was not the Imperial Japanese Army.; Wasn't part of the Imperial Japanese Army.

Past/Perfective
Negative