戦没 せんぼつ しゃ追悼 ついとう記念 きねん であれば
sembotsusha tsuitōkinenhideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 戦没者追悼記念日

1. If it is Memorial Day for the war dead; If it were Memorial Day for the war dead

Ba Conditional