20th Chemical, Biological, Radiological, Nuclear, Explosives Command

20th Chemical, Biological, Radiological, Nuclear, Explosives Command
Unit name	20th Chemical, Biological, Radiological, Nuclear, Explosives Command
Dates	2004 – present
Country	United States
Branch	United States Army
Type	Chemical Corps
Role	CBRN defense
Size	Command
Garrison	Aberdeen Proving Ground
Motto	"Defend and Protect"

20th Chemical, Biological, Radiological, Nuclear, Explosives Command is a major United States Army formation responsible for providing specialized CBRN defense and explosive ordnance disposal capabilities. Headquartered at Aberdeen Proving Ground in Maryland, it serves as the Department of Defense's primary force for countering weapons of mass destruction threats. The command integrates expertise from the Chemical Corps and other branches to support combant commands and civil authorities globally.

History

The command's lineage traces its origins to the Chemical Warfare Service established during World War I. Following the September 11 attacks, the need for a dedicated WMD response force led to its activation in 2004 under the United States Army Forces Command. Its creation consolidated various EOD and chemical defense units, including elements from the former Technical Escort Unit. The unit has since evolved, integrating lessons from operations in Iraq and Afghanistan, where its personnel responded to improvised explosive device threats and suspected chemical weapon sites. Key developments include its role in supporting the Federal Emergency Management Agency during domestic incidents like Hurricane Katrina.

Organization

The command is organized under the United States Army Reserve and includes both active and reserve component units. Its core consists of several specialized Chemical, biological, radiological, and nuclear battalions and a dedicated EOD group. Major subordinate units include the 48th Chemical Brigade and the 71st Ordnance Group (EOD), which provide command and control for deployed elements. It maintains close operational relationships with the FBI's Hazardous Materials Response Unit, the Department of Homeland Security, and allied organizations like the British Army's Defence CBRN Centre. The headquarters staff integrates personnel from the United States Navy and United States Air Force for joint planning.

Mission and capabilities

The primary mission is to plan, integrate, and execute full-spectrum CBRN defense operations and explosive hazard mitigation. This includes conducting technical reach-back analysis through its Chemical Biological Applications and Risk Reduction facility. Capabilities encompass technical surveillance, hazard identification, material characterization, and personnel decontamination. The command operates specialized equipment such as the Fox NBC Reconnaissance Vehicle and provides trained CBRN response teams. It supports United States Northern Command for homeland defense and United States European Command for theater security cooperation exercises. Its experts also advise the Organization for the Prohibition of Chemical Weapons on verification protocols.

Notable operations and exercises

The command has deployed elements worldwide, including in support of Operation Iraqi Freedom to locate and secure former Saddam Hussein-era chemical munitions. During Operation Enduring Freedom, its EOD technicians conducted counter-IED operations across Helmand Province. It played a key role in the 2014 Ebola virus epidemic response, deploying assessment teams to Liberia. Notable exercises include leading the Joint CBRN Exercise at the Muscatatuck Urban Training Center and participating in NATO's Steadfast Jupiter series. The command also regularly supports National Special Security Events such as the Super Bowl and Presidential Inauguration.

Heraldry and insignia

The unit's distinctive insignia features a dragon symbolizing the destructive nature of CBRN hazards, superimposed on a traditional Chemical Corps castle. The shield incorporates elements from the Ordnance Corps to represent the EOD mission. Its motto, "Defend and Protect," is displayed on a scroll beneath the emblem. The shoulder sleeve insignia was approved by the United States Army Institute of Heraldry in 2006. The command also maintains a separate coat of arms for ceremonial purposes, which includes a salamander, a historical symbol of protection against fire, reflecting its resilience against extreme hazards.

Commanders

Commanders have typically been Chemical Corps officers with extensive experience in WMD policy and joint operations. The first commander was Brigadier General Stanley H. Lillie. Subsequent leaders have included officers who previously served with the United States Army Medical Research Institute of Chemical Defense and the Defense Threat Reduction Agency. Commanders often rotate from senior posts within the United States Army Training and Doctrine Command or from joint assignments at the Pentagon. The command's senior Enlisted Advisor is usually a Master Sergeant or Sergeant Major from the Chemical Corps or Ordnance Corps.

Category:Chemical Corps of the United States Army Category:Commands of the United States Army