れい しき艦上 かんじょう戦闘 せんとう でしょう
reishikikanjōsen tōkideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 零式艦上戦闘機

1. Probably a Zero fighter.

Polite
Presumptive
Conjecture
Military