連合 れんごう こく最高 さいこう司令 しれい かん そう司令 しれい だったら
rengōkokusaikōshireikan sō shire ibudattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 連合国最高司令官総司令部

1. If it were the Supreme Commander for the Allied Powers headquarters…; If the Supreme Commander for the Allied Powers headquarters were…

Tara Conditional