The Amazing World of War Machines S01 E13 NBC2 (Nuclear, Biological and Chemical) / Future War

NBC - Nuclear, Biological and Chemical - are the three weapons of mass destruction. The latter two have been used extensively throughout history in warfare. Bio-weapons have generally been taken from nature, although there have been attempts to manufacture them. Chemical weapons fall into four main categories according to which bodily system they effect: Nerve, Blood, Lung and Skin.