11 And suppose you see among the captives a beautiful woman, and you are attracted to her and want to marry her. 12 If this happens, you may take her to your home, where she must shave her head, cut her nails, 13 and change the clothes she was wearing when she was captured. She will stay in your home, but let her mourn for her father and mother for a full month. Then you may marry her, and you will be her husband and she will be your wife.
Matthew Henry's Commentary on Deuteronomy 21:11-13
Commentary on Deuteronomy 21:10-14
(Read Deuteronomy 21:10-14)
By this law a soldier was allowed to marry his captive, if he pleased. This might take place upon some occasions; but the law does not show any approval of it. It also intimates how binding the laws of justice and honour are in marriage; which is a sacred engagement.