Question: what does the bible say about remembrance day?
Answer: A Time for Everything.
Comforting All Who Mourn. My eyes fail with longing for Your word, While I say, “When will You comfort me?” ~ Psalm 119:82. ... 
Honoring Their Sacrifice. Those who honor me I will honor, but those who despise me will be disdained. ... 
Strengthening Those in Harm's Way. Have I not commanded you?