一斉 いっせい射撃 しゃげきではありませんでした
issei shagekidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 一斉射撃

1. It was not a volley of fire.; It was not simultaneous firing.

Past/Perfective
Negative
Polite
Formal Register