1. Do not attack after sunset.
2. Do not attack from behind.
3. Do not attack without prior warning.
4. Do not use weapon on a weaponless person.
5. Forgive your enemy if he surrenders to you.
These rules may sound very great. But, thinking practically, these rules created problems for those who followed these. This is because often in a war, one party followed these rules and the opposing party did not.