攻撃 こうげき開始 かいし せんじゃなかったです
kō gekikaishisenjanakattadesu

Noun
Desu Copula

The polite, past negative form of 攻撃開始線

1. Wasn't the attack start line.; Wasn't the starting line for the attack.

Past/Perfective
Negative
Polite
Casual Register
Military