陸軍 りくぐん士官 しかん学校 がっこうだったら
rikugunshikangakkōdattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 陸軍士官学校

1. If/when (it is) the Army Officer Academy; If (it were) the Army Officer Academy

Tara Conditional