The following is a continuation of the ethics and rules governing Islamic Perspective on war.
#1. Moral ethics before going to war: Avoiding infidelity and treachery
What does this mean? It simply implies that in the event a treaty was concluded between Muslims and another country, and this country performed actions which insinuate breaching the terms of the treaty, Muslims are not allowed to go into war with them unless the other country which breached the treaty is notified about invalidating the treaty before going into war fare provided that sufficient time is given for them to deliberate over breaching their treaty as they might retreat and ask for renewing the treaty and maintain peace. Allah (SWT) said in the Quran,
“If you [have reason to] fear from a people betrayal, throw [their treaty] back to them, [putting you] on equal terms. Indeed, Allah does not like traitors.” 8:58
#2. Moral ethics in the start of fighting: Have a complete understanding of who and why the Muslims are fighting against, and most importantly make sure that those who didn’t participate in the war are affected.
Allah SWT only limited killing when it is for the purpose of benefitting people and therefore God said repetitively in the Quran, “Don’t transgress” which simply implies that we can only fight those who provoked us without transgressing through fighting others who are not part of the combat. Allah’s messenger, Muhammed, (peace and blessings of Allah be upon him) classified those that Muslims are not allowed to fight and they included women, children, old people, crippled, blind, handicapped, one whose right hand is cut off, lunatic, monks in monasteries, wanderer in mountains who is not mixed with people, people who are secluded in a house or a church worshipping in a locked door.
#3. Soldiers shouldn’t refrain from destroying properties: God has forbade soldiers form destroying any property, including mosques, houses, halls, or any other place which might be beneficial to the general public.