A more thorough explanation:

The Law of The Hague is the first widely accepted body of international law of war. It was approved by conventions in The Hague in 1899 and 1907. The purpose of this law was to set up procedures for mediation and arbitration of disputes to avoid war and regulate the type and use of weapons in warfare.

The Lieber Code is a codification of rules and customs of warfare. It was first developed by Francis Lieber during the American Revolution and formally adopted as law by Abraham Lincoln during the Civil War. The Lieber Code was used as the basis for the first codified international rules of law at The Hague Peace Conference of 1899. The rules were extended and refined in another Hague convention in 1907 and became known as the Law of The Hague.

An example of the Law of The Hague is the prohibition of the use of chemical weapons in warfare. This law was established to protect civilians and soldiers from the devastating effects of chemical weapons. Another example is the requirement to treat prisoners of war humanely and provide them with adequate medical care.

The Lieber Code also provides examples of rules of warfare, such as the prohibition of torture and the protection of civilians and their property during times of war.

These examples illustrate how the Law of The Hague and the Lieber Code aim to regulate warfare and protect human rights during times of conflict.