きゅう降下 こうか爆撃 ばくげきではありませんでした
kyūkōka bakugekidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 急降下爆撃

1. Was not a dive bomber.; Was not dive-bombing.

Past/Perfective
Negative
Polite
Formal Register