| Unit Name: | 464th Chemical Brigade |
| Dates: | 20 October 1953 – 31 January 1968 22 February 1972 – 16 September 2008 |
| Country: |  United States |
| Allegiance: | Reserve |
| Role: | Chemical, biological, radiological, and nuclear support |
| Size: | Brigade |
| Command Structure: | First United States Army |
| Motto: | We Serve In Silence |
The 464th Chemical Brigade was a chemical unit in the United States Army Reserve from February 1972 until September 2008.
To provide command and control of two to six chemical battalions and other assigned or attached separate companies at Corps level. To provide staff planning and coordination for the combat, combat support, and combat service support operations for all assigned and attached units. To allocate units and resources in support of chemical, biological, radiological, and nuclear (CBRN) reconnaissance, decontamination, biological detection, and smoke operations. And, to conduct civilian decontamination in response to a domestic accident or deliberate CBRN incident.
We Serve In Silence is the motto of the 464th Chemical Brigade. This motto connotes the silent, but deadly force of the weapons that the chemical corps built to combat and the silent, dirty, thankless, yet life-saving job that the chemical soldier performs with the utmost expertise, dignity, and honor.
This unit was constituted on 20 October 1953 in the Army Reserves as the 464th Chemical Group and assigned to First United States Army. It was officially activated in New York City on 1 December 1953. It was later inactivated on 31 January 1968. On 22 February 1972, the unit was assigned to Third United States Army and activated at Orlando, Florida. The unit was transferred from Third United States Army to Second United States Army on 1 October 1983. After being reassigned back to First United States Army on June 1987, it was reorganized from the 464th Chemical Group to the 464th Chemical Brigade. And, it was relocated to Johnstown, Pennsylvania. The unit was inactivated on 16 September 2008.
The following is a list of all of the commanders of this unit from 1972 until its inactivation in 2008, along with the units they commanded.
| Commander | Dates | |
|---|---|---|
| COL James B. Sullivan | February 1972 – September 1974 | |
| LTC Johnnie L. Gray, Jr. | September 1974 – September 1977 | |
| LTC Robert B. Martin | September 1977 – March 1978 | |
| COL James T. Craig | March 1978 – November 1980 | |
| LTC Howard E. Lang | November 1980 – March 1981 | |
| COL Myron B. Barrow | March 1981 – June 1984 | |
| LTC James W. Wolfe | June 1984 – August 1984 | |
| COL Daniel B. Curtis | August 1984 – June 1987 | |
| Units Commanded | ||
| Unit | Dates | |
| 186th MOB DES Detachment | January 1975 – April 1981 | |
| 305th Finance Section | April 1972 – October 1976 | |
| 310th MOB DES | April 1972 – June 1987 | |
| 310th Military Intelligence Detachment | April 1972 – January 1975 | |
| 344th Medical Detachment | April 1972 – January 1975 | |
| 345th Military Police Company | April 1972 – January 1975 | |
| 349th Medical Detachment | April 1972 – January 1975 | |
| 372nd Public Information Detachment | April 1972 – January 1975 | |
| 383rd Military Police Detachment | April 1972 – January 1975 | |
| 442nd Personnel Service Company | April 1972 – November 1977 | |
| 445th Medical Company | April 1972 – January 1975 | |
| 467th Military Intelligence Detachment | April 1972 – October 1974 | |
| 479th Military Intelligence Detachment | April 1972 – October 1974 | |
| 574th Military Police Platoon | April 1972 – January 1975 | |
| 674th Transportation Company | January 1975 – June 1987 | |
| 1083rd RTU | April 1979 – April 1981 | |
| 3379th Logistics Command (RTU) | April 1972 – January 1975 | |
| 3396th RECSTA | April 1972 – June 1987 | |
| Brigade Commanders | ||
|---|---|---|
| Commander | Dates | |
| COL James R. Harvey | June 1987 – March 1988 | |
| BG Leonard L. Hoch | March 1988 – March 1992 | |
| COL Bernard Kosowski | March 1992 – July 1993 | |
| COL Gary G. Gallo | July 1993 – December 1996 | |
| COL Richard T. Whitman | December 1996 – November 1999 | |
| COL Richard J. Kiehart | November 1999 – January 2003 | |
| COL Paul H. Dietrich | January 2003 – January 2006 | |
| COL Scott S. Haraburda | January 2006 – October 2007 | |
| COL Gregory A. Ritch | October 2007 – September 2008 | |
| Units Commanded | ||
| Unit | Dates | |
| 485th Chemical Battalion | October 1988 – September 2007 | |
| 336th Military Police Battalion | October 1988 – November 1995 | |
| 128th Military Intelligence Battalion | November 1995 – September 1996 | |
| 458th Engineer Battalion | November 1995 – September 2007 | |
| 463rd Engineer Battalion | November 1995 – August 1996 | |
| 383rd Military Intelligence Battalion | October 1996 – September 1999 | |
| 392nd Signal Battalion | January 1998 – September 2000 | |
| 444th Personnel Services Battalion | October 2004 – January 2006 | |
| 365th Engineer Battalion | October 2006 – September 2007 | |