Complex weapons are strategic and tactical
weapons that rely upon guidance systems to achieve precision effects.
This area covers a broad range of technologies reflecting the increasing diversity and use of sophisticated 'smart' missiles, shells and warheads in all environments and operations.
General Munitions are 'simple' systems needing minimal maintenance and based on generic engineering and technology, primarily energetics (the delivery of a lot of energy, usually through a combination of weight and very high speed, or an explosion).
As the innovative use of low-cost guidance technology develops, there will be less distinction between general munitions and complex weapons.