Ratner SR. War Crimes, Categories of. Crimes of War Project. | ~1700 word section of book, (2007) Crimes of War: What the Public Should Know. W. W. Norton & Co., Revised/expanded edition. ISBN 9780393328462 | section on categories of war crimes, begins: "War crimes are those violations of the laws of war—or international humanitarian law (IHL)—that incur individual criminal responsibility."