後方 こうほう地域 ちいき警備 けいびじゃありませんでした
kōhōchiikikeibijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 後方地域警備

1. Was not rear area security.; Was not on rear area security duty.

Past/Perfective
Negative
Polite
Terminal Form