Before battle in Deuteronomy 20, which man was told to go back home?

Answer: One with a new, undedicated house

Officers sent home any man with an undedicated new house, an unenjoyed vineyard, or a pledged bride, lest another man take them.

“Furthermore, the officers are to address the army, saying, “Has any man built a new house and not dedicated it? Let him return home, or he may die in battle and another man dedicate it.”— Deuteronomy 20:5 (BSB)