Is it true that the Law of War is considered a U.S. domestic law?

The Law of War is indeed considered a part of U.S. domestic law. This principle is grounded in the Constitution's Article VI, which states that treaties made under the authority of the United States shall be the supreme law of the land. The United States is a party to various treaties and agreements that establish the Law of War, such as the Geneva Conventions, and these treaties become binding legal obligations when ratified.

Additionally, the principles and customs of the Law of War are integrated into U.S. military law and operations, influencing how military personnel engage in armed conflict. U.S. domestic law also encompasses various statutes and policies that implement and reinforce the Law of War, making it a relevant and enforceable part of the legal framework within the United States.

In summary, the integration of international treaties into U.S. law and the application of these principles in military operations affirm that the Law of War is considered U.S. domestic law.