Deuteronomy – Camp Holiness
Deuteronomy 23:10-15
The Torah commands that the military camp must be holy ("כִּי ה' אֱלֹהֶיךָ מִתְהַלֵּךְ בְּקֶרֶב מַחֲנֶךָ") and establishes basic norms of dignified conduct for soldiers, including physical hygiene and moral purity.
כִּֽי־תֵצֵ֥א מַחֲנֶ֖ה עַל־אֹיְבֶ֑יךָ וְנִ֨שְׁמַרְתָּ֔ מִכֹּ֖ל דָּבָ֥ר רָֽע׃ כִּי֩ יְהֹוָ֨ה אֱלֹהֶ֜יךָ מִתְהַלֵּ֣ךְ ׀ בְּקֶ֣רֶב מַחֲנֶ֗ךָ לְהַצִּֽילְךָ֙ וְלָתֵ֤ת אֹיְבֶ֙יךָ֙ לְפָנֶ֔יךָ וְהָיָ֥ה מַחֲנֶ֖יךָ קָד֑וֹשׁ וְלֹֽא־יִרְאֶ֤ה בְךָ֙ עֶרְוַ֣ת דָּבָ֔ר וְשָׁ֖ב מֵאַחֲרֶֽיךָ׃ {ס}
When you go out as a troop against your enemies, be on your guard against anything untoward. Since the ETERNAL your God moves about in your camp to protect you and to deliver your enemies to you, let your camp be holy; let [God] not find anything unseemly among you and turn away from you.
Why it matters — Establishes that even in wartime, the military camp is subject to divine law and human dignity — soldiers are not a lawless zone unto themselves.