In Chapter 6 the Manual’s discussion of the law concerning weapons is dealt with. The Chapter starts by outlining the US DOD weapon review policy. Some interesting omissions from the section in the Manual devoted to weapons that are prohibited by the law are noted. The interesting implication in the Manual that there is no customary law rule prohibiting expanding bullets is noted as are the details of the other Manual provisions dealing with specific weapon types. The Manual’s discussion of autonomy and of the superfluous injury and indiscriminate weapon principles is critiqued and its sections on poisons, poison gases and chemical weapons, on biological weapons, on mines, booby-traps and other devices, on cluster munitions, incendiaries, laser weapons, herbicides and nuclear weapons are all examined carefully and are subjected to criticism where it is thought appropriate. The Chapter ends by reflecting on the Manual’s discussion of explosive remnants of war.