text: FM 7-100.1________________________________________________________________________________
  ORGANIZATION
  11-61. Chemical defense units are responsible for nuclear and biological, as
  well as chemical, protection and reconnaissance measures. In the adminis-
  trative force structure, such units are organic to all maneuver units brigade
  and above. Operational-level commands may provide some chemical defense
  augmentation to subordinate units, particularly those conducting the main
  effort. However, they must also retain some chemical defense assets at the
  operational level to deal with the threat to the support zone and provide
  chemical defense reserves.
  11-62. Chemical troops are a vital component of combat support. They pro-
  vide trained specialists for chemical defense units and for units of other
  arms. Basic tasks chemical troops can accomplish in support of combat troops
  include
  • Reconnoitering known or likely areas of NBC contamination.
  • Warning troops of the presence of NBC contamination.
  • Monitoring changes in the degree of contamination.
  • Monitoring the NBC contamination of personnel, weapons, and equipment.
  • Performing decontamination activities.
  • Providing trained troops to handle chemical munitions.
  They perform specialized NBC reconnaissance in addition to supporting
  regular ground reconnaissance efforts.
  11-63. NBC protection functions are not limited to maneuver units. Artillery
  and air defense regiments and brigades have their own chemical defense
  units. Medical and SSM units have some decontamination equipment.
  Engineer troops also are important, performing functions such as decon-
  taminating roads, building bypasses, and purifying water supplies. Of course,
  all arms have a responsibility for chemical reconnaissance and at least par-
  tial decontamination without specialist support. However, they can continue
  combat actions for only a limited time without complete decontamination by
  chemical troops.
  EQUIPMENT
  11-64. OPFOR troops have protective clothing. Most combat vehicles and
  many noncombat vehicles have excellent overpressure and filtration systems.
  Items of equipment for individual or collective protection are adequate to pro-
  tect soldiers from contamination for hours, days, or longer, depending on the
  nature and concentration of the contaminant. Antidotes provide protection from
  the effects of agents. Agent detector kits and automatic alarms are available in
  adequate quantities and are capable of detecting all standard agents.
  11-65. Chemical troops have a wide variety of dependable equipment that,
  for the most part, is in good supply and allows them to accomplish a number
  of tasks in support of combat troops. They have specialized equipment for de-
  tecting and monitoring NBC contamination. They have some specialized
  NBC reconnaissance vehicles, and they may use helicopters for NBC recon-
  naissance. Decontamination equipment is also widely available.