"The Invincible Eagle"  
Sousa - (1901)

MISSION

"As one of the Army's two on-call heavy contingency force divisions, the First Team has an on-order mission to deploy to a designated contingency area of operations by sea, air or land, conduct reception, staging, onward movement and integration; and on order, conduct combat operations and redeployment."



American
Defense

American
Campaign

Asiatic Pacific
Campaign

World War II
Victory

Army of
Occupation

Korean
Service

Vietnam
Service

SouthWest
Asia

The attached data identifies and summarizes the command and subordinate units that have been assigned or attached to the Separate Battalions and Companies, 1st Cavalry Division who participated, beginning with its organization and activation in 1921 to the present day, in their many missions of defending our country, achieving victory in war and in peace, providing humanitarian support anywhere in the world. In order to present a pictorial time line representation showing continuity of the commands of individual units, along with their designations (and redesignations), the data has been displayed in an indentured, structured format similar to the present day Line Organization.

In summary, the listing provides for an orderly, detailed presentation of the Order of Battle for the Separate Battalions and Companies, 1st Cavalry Division as originally activated in 1921 along with the incremental organizational changes that were made in the time interval up to the present day. The following paragraphs detail the method of presentation.

The period of activation of a command or unit is represented by a horizontal line starting with a numeric corresponding with the year of activation and ending with a numeric corresponding with year of deactivation or redesignation. Should the command or unit be reactivated in a later time period, the time line is reinitiated on the original reference line of entry at the location representative of the date reactivated. Subordinate units, listed under command units are listed with numeric designations in ordered sequence. An exception is made for those units which were reorganized and redesignated. This numeric of the year in which the redesignation took place is annotated by a tilde (~).

The data used in preparing this presentation was provided by the Center of Military History, Department of the Army. The certification to the accuracy of the assigned units and time line intervals will be conducted by a detailed analysis of the lineage sheets for each unit. Upon confirmation of unit and assignment/deactivation date, the entry will be annotated by the addition of the referenced Day/Month code. It is intended that this document will be a reference tool for future historical research activity. As such, when any errors or omissions are detected in detailed follow-on work, the document will be corrected and reissued.

THE EARLY YEARS
13 September 1921 - 06 December 1941

TIME LINE -------------------------- 13 Sep 19212223242526272829303132333435363738394041

SPECIAL TROOPS, 1st Cavalry Division
    "HHT"                             13 Sep '21-------------------------------------'41~ (Con't next era)
    13th Signal Troop                 13 Sep '21-'23~ Reorg'd & Dsgn'd 13 Dec as 1st Signal Trp, below
    1st Signal Troop                      13 Dec '23---------------------------------'41~ (Con't next era)

Military Police Plt, Hdqtrs Troop                                         15 Feb '39-'41~ (Con't next era)

=============================================================================================================

WORLD WAR II
07 December 1941 - 02 September 1945

TIME LINE ----------------------------- 07 Dec 194142434445

SPECIAL TROOPS, 1st Cavalry Division
    "HHT"                                07 Dec '41-----'45~ (Con't next era)
    1st Signal Troop                     07 Dec '41-----'45~ (Con't next era)
    
Mltry Police Plt, Hdqtrs Troop           07 Dec '41/2~ Dsgn'd 04 Jul as Mltry Police Plt, 1st Cav Div, below
Mltry Police Plt, 1st Cav Div              04 Jul '42/3~ Dsgn'd Mltry Police Plt, 1st Cav Div (Spc'l), below
Mltry Police Plt, 1st Cav Div (Spc'l)        04 Dec '43-'45~ (Con't next era)
    
801st Counter Intelligence Corps Detachment           '44

Band, 1st Cavalry Division                       03 Jun '45~ (Con't next era)

=============================================================================================================

OCCUPATION OF JAPAN
03 September 1945 - 18 July 1950

TIME LINE ----------------------------- 03 Sep 19454647484950

SPECIAL TROOPS, 1st Cavalry Division
    "HHT"                                03 Sep '45-----'49;

    1st Signal Troop                     03 Sep '45-----'49~ Reorg'd & Dsgn'd 25 Mar as 13th Signal Co,, below
    13th Signal Company                          25 Mar '49/0~ (Con't next era)

Band, 1st Cavalry Division               03 Sep '45-------'50~ (Con't next era)

Mltry Police Plt, 1st Cav Div (Spc'l)    03 Sep '45------'49~ Dsgn'd 25 Mar as 545th Mltry Police Co, below
545th Mltry Police Company                        25 Mar '49/0~ (Con't next era)

=============================================================================================================

KOREAN WAR
18 July 1950 - 30 December 1951

TIME LINE ----------------------------- 18 Jul 195051

13th Signal Company                      18 Jul '50/1~ (Con't next era)

8th Engineer Combat Battalion            18 Jul '50/1~ (Con't next era)

Band, 1st Cavalry Division               18 Jul '50/1~ (Con't next era)

191st Counter Intelligence Corps Det     06 Oct '50/1~ (Con't next era)

545th Mltry Police Company               18 Jul '50/1~ (Con't next era)

=============================================================================================================

RETURN TO JAPAN
30 December 1951 - 15 October 1957

TIME LINE ----------------------------- 30 Dec 1951525354555657

SEPARATE BATTALIONS/COMPANIES
    "HHC", 1st Cavalry Division

    13th Signal Company                  30 Dec '51---------'57~ (Con't next era as HHC 13th Signal Bn)

    191st Counter Intelligence Det       30 Dec '51-------'56

    545th Military Police Company        30 Dec '51---------'57; Inactv'd 15 Oct & Relv'd from 1st Cav Div
       1st Traffic Plt                   30 Dec '51---------'57; Inactv'd 15 Oct & Relv'd from 1st Cav Div
       2nd Traffic Plt                   30 Dec '51---------'57; Inactv'd 15 Oct & Relv'd from 1st Cav Div
       3rd Traffic Plt                   30 Dec '51---------'57; Inactv'd 15 Oct & Relv'd from 1st Cav Div

=============================================================================================================

DEMILITARIZED ZONE
15 October 1957 - 01 July 1965

TIME LINE ----------------------------- 15 Oct 19575859606162636465


SEPARATE BNs/COs
    "HHC", 1st Cavalry Division

    DMZ Police Company (Prov)            15 Oct '57---'60; Absrb'd 01 Apr W/1st Recon Sqdn, 9th Cav, below

    "A" Trp, 9th Cavalry Regiment        15 Oct '57~ Absrb'd W/16th Recon Co & Dsgn'd "HHT", 1st Recon Sqdn, 9th Cav, below

    1st Reconnaissance Sqdn, 9th Cavalry 01 Nov '57---------'63~ Desgn'd 01 Sep as 1st Sqdn, 9th Cav, below
        "HHT"                            01 Nov '57---------'63~
        "A" Troop                        01 Nov '57---------'63~
        "B" Troop                        01 Nov '57---------'63~
        "C" Troop                        01 Nov '57---------'63~

    1st Sqdn, 9th Cavalry Regiment                   01 Sep '63-'65 (Con't Next Era)

    1st Battalion, 15th Armored                      01 Jul '63-'65; Inactv'd 01 Jul at Ft. Benning, GA

    2nd Battalion, 15th Armored                      01 Aug '63-'65; Inactv'd 01 Jul at Ft. Benning, GA

    3rd Medium Tank Bn, 40th Armor       15 Oct '57---------'63; Relv'd 15 Jul from 1st Cav Div
        "HHC", 3rd Med Tank Battalion    15 Oct '57---------'63; Relv'd 15 Jul from 1st Cav Div
        "A" Co, 3rd Bn                   15 Oct '57---------'63; Relv'd 15 Jul from 1st Cav Div
        "B" Co, 3rd Bn                   15 Oct '57---------'63; Relv'd 15 Jul from 1st Cav Div
        "C" Co, 3rd Bn                   15 Oct '57---------'63; Relv'd 15 Jul from 1st Cav Div
        "D" Co, 3rd Bn                   15 Oct '57---------'63; Relv'd 15 Jul from 1st Cav Div
        "E" Co, 3rd Bn                   15 Oct '57---------'63; Relv'd 15 Jul from 1st Cav Div

    8th Engineer Battalion (Inf)         15 Oct '57-------------'65~ (Con't next era)
        "HHC", 8th Engineer Battalion    15 Oct '57-------------'65~ (Con't next era)
        "A" Co, 8th Engr Bn              15 Oct '57-------------'65~ (Con't next era)
        "B" Co, 8th Engr Bn              15 Oct '57-------------'65~ (Con't next era)
        "C" Co, 8th Engr Bn              15 Oct '57-------------'65~ (Con't next era)
        "D" Co, 8th Engr Bn              15 Oct '57-------------'65~ (Con't next era)
        "E" Co, 8th Engr Bn              15 Oct '57-------------'65~ (Con't next era)

    13th Signal Battalion (Inf)          15 Oct '57-------------'65~ (Con't next era)
        "HHC",                           15 Oct '57-------------'65~ (Con't next era)
        "A" Co, Command Operations       15 Oct '57-------------'65~ (Con't next era)
        "B" Co, Forward Communications   15 Oct '57-------------'65~ (Con't next era)

    191st Military Intelligence Detachment   15 May '59---------'65~ (Con't next era)

    545th Military Police Company                    15 Jul '63-'65~ (Con't next era)

=============================================================================================================

FORT BENNING, AIRMOBILE
01 July 1965 - 15 August 1965

TIME LINE ----------------------------- 01 Jul 1965

DIVISION SUPPORT COMMAND
    "HHC" & Band, Support Command        01 Jul '65~ (Con't next era)
    8th Engineer Battalion               01 Jul '65~ (Con't next era)
    13th Signal Battalion                01 Jul '65~ (Con't next era)
    15th Medical Battalion               01 Jul '65~ (Con't next era)
    15th Supply & Service Battalion      01 Jul '65~ (Con't next era)
    15th Transportation Battalion        01 Jul '65~ (Con't next era)
    27th Maintenance Battalion           01 Jul '65~ (Con't next era)
    15th Administrative Company          01 Jul '65~ (Con't next era)
    15th Supply & Service Battalion      01 Jul '65~ (Con't next era)
    545th Mltry Police Company           01 Jul '65~ (Con't next era)
    191st Mltry Intelligence Detachment  01 Jul '65~ (Con't next era)
    "C" Co, 313th ASA Bn (AKA 10th RRU)  01 Jul '65~ (Con't next era)


=============================================================================================================

VIETNAM WAR
16 August 1965 - 28 June 1972

TIME LINE ----------------------------- 16 Aug 196566676869707172

DIVISION SUPPORT COMMAND
    "HHC" & Band, Support Command        12 Sep '65---------'71~ (Con't next era)
    1st Forward Service Support Element             Vietnam Era
    2nd Forward Service Support Element             Vietnam Era
    3rd Forward Service Support Element             Vietnam Era
    4th Forward Service Support Element             Vietnam Era
    5th Forward Service Support Element             Vietnam Era
    8th Engineer Battalion               16 Aug '65---------'71~ (Con't next era)
    13th Signal Battalion                05 Sep '65---------'71~ (Con't next era)
    15th Administrative Company          05 Sep '65---------'71~ Dsgn'd 15 Mar as 15th Finance Bn, below
    15th Finance Battalion                            15 Mar 71~ (Con't next era)
    15th Medical Battalion               05 Sep '65---------'71~ (Con't next era)---------'71~ (Con't next era)
    15th Supply & Service Battalion      05 Sep '65---------'71~ (Con't next era)
        Aerial Equipment Support Company (Prov) '65/6;
    15th Transportation Battalion (AM&S) 05 Sep '65---------'71~ Inactv'd 28 Apr Ft Lewis, WA
    27th Maintenance Battalion           05 Sep '65---------'71~ (Con't next era)
    191st Mltry Intelligence Detachment  05 Sep '65-----'69~ Dsgn'd 26 Dec as Co, below
        LRRP Det (Prov)                    07 Jan '66/7~ Asgn'd 02 Feb, below
        LRRP Det                             02 Feb '67~ Dsgn'd 14 Jun as Company, below
        LRRP Company, 1st Cavalry Division   14 Jun '67~ Dsgn'd 20 Dec as "E" Co, 52nd Inf, below
    191st Mltry Intelligence Company             26 Dec '69-'71~ Asgn'd 30 Apr to 3rd Bde (SEP), above
    "C" Co, 313th ASA Bn (AKA 10th RRU)  05 Sep '65/6~ Dsgn'd 15 Oct as 371st ASA Co, below
    371st Army Security Agency Company     15 Dec '66-------'71~ (Con't next era)
    545th Mltry Police Company           05 Sep '65---------'71~ (Con't next era)

=============================================================================================================

TRICAP TO ARMOR
05 May 1971 - 16 September 1990

TIME LINE ----------------------------- 05 May 197172737475767778798081828384858687888990

SEPARATE BATTALIONS/COMPANIES
    "HHC", 1st Cavalry Division (TRICAP) 05 May '71-----'75~ Dsgn'd ARMOR 21 Feb
    "HHC", 1st Cavalry Division (ARMOR)          21 Feb '75---------------------------'90~ (Con't next era)

    Band, 1st Cavalry Division                                           16 Feb '87---'90~ (Con't next era)

    1st Cavalry Horse Detachment                      Dec '76-------------------------'90~ (Con't next era)

    8th Engineer Battalion               05 May '71-----------------------------------'90~ (Con't next era)

    13th Signal Battalion                05 May '71-----------------------------------'90~ (Con't next era)
    55th Signal Company                          21 Feb '75; Relv'd 21 Jul from 1st Cav Div & asgn'd to 6th Cav Bde

    15th Adjutant General Company        05 May '71-----------------------------'87;

    15th Data Processing Unit            05 May '71--------

    15th Finance Company                 05 May '71-------------------'82~ Relv'd 16 Mar Xfer'd DIRECT SUPPORT, below

    191st Military Intelligence Company (Prov)       02 Jul '77-----'81~ Mission asgn'd to 312 MI, below
    312th Military Intelligence Company                      01 Oct '81---------------'90~ (Con't next era)

    371 Army Security Agency (ASA)       05 May '71-------'76; Relv'd Oct & Asgn'd to FORSCOM

    545 Military Police Company          05 May '71-----------------------------------'90~ (Con't next era)

    230th Avn Battalion (Note 1)         05 May '71; Inactv'd 30 June at Ft Hood, TX

    Note 1: The 230th Avn Battalion was an accounting organization
            setup to receive assets of the Vietnam Avn Organizations.

=============================================================================================================

PERSIAN GULF WAR
16 September 1990 - 07 March 1991

TIME LINE ----------------------------- 16 Sep 199091

SEPARATE BNs/COs, 1st Cavalry Division - "Maverick"
    "HHC", 1st Cavalry Division
 
    Band, 1st Cavalry Division
 
    1st Sqdn, 7th Cavalry Regiment       28 Sep '90/1~ Ret'rd to CONUS 14 Apr (Con't next era)
        "HHT", 1st Sqdn, 7th Cav Regt
         "A" Trp, 1st Sqdn, 7th Cav Regt
         "B" Trp, 1st Sqdn, 7th Cav Regt
         "C" Trp, 1st Sqdn, 7th Cav Regt
         "D" Trp, 1st Sqdn, 7th Cav Regt
         "E" Trp, 1st Sqdn, 7th Cav Regt
         "F" Trp, 1st Sqdn, 7th Cav Regt
  
    4th Battalion, 5th Air Defense       14 Oct '90/1~ Ret'rd to CONUS 06 Apr (Con't next era)
        "HHB", 4th Bn, 5th Air Defense
        "A" Btry, 4th Bn, 5th Air Dfnse
        "B" Btry, 4th Bn, 5th Air Dfnse
        "C" Btry, 4th Bn, 5th Air Dfnse
        "D" Btry, 4th Bn, 5th Air Dfnse

    8th Engineer Battalion               24 Sep '90/1~ Ret'rd to CONUS 15 Mar (Con't next era)
        "HHC", 8th Engineer Bn
        "A" Co, 8th Engineer Bn
        "B" Co, 8th Engineer Bn
        "C" Co, 8th Engineer Bn
        Service Plt, 8th Engineer Bn
 
    13th Signal Battalion                23 Sep '90/1~ Ret'rd to CONUS 15 Mar (Con't next era)
        "HHC", 13th Signal Bn
        "A" Co, 13th Signal Bn
        "B" Co, 13th Signal Bn
        "C" Co, 13th Signal Bn
        "D" Co, 13th Signal Bn

    15th Finance Battalion

    15th Personnel Service Battalion

    "A" Company, 17th Engineer Battalion

    44th Chemical Co (NBC Defense)

    68th Chemical Company                14 Oct '90/1~ Ret'rd to CONUS 21 Apr (Con't next era)

    123rd Engineer Detachment (Terrain)

    312th Mltry Intelligence Battalion   04 Oct '90/1~ Ret'rd to CONUS 06 Apr (Con't next era)
        "HHC", 312th Mltry Intel Bn
        "A" Co, 312th Mltry Intel Bn
        "B" Co, 312th Mltry Intel Bn
        "C" Co, 312th Mltry Intel Bn
        "D" Co, 312th Mltry Intel Bn

    1st Plt, 502nd Miltry Police Company

    545th Mltry Police Company           15 Sep '90/1~ Ret'rd to CONUS 20 Apr (Con't next era)

    577 Engineer Detachment (Terrain)

    Trial Defense Service

    US Air Force, Teams 1 & 2

=============================================================================================================

FORCE RESTRUCTURING
08 Mar 1991 - 01 October 1999

TIME LINE ----------------------------- 08 Mar 19919293949596979899

SEPARATE BNs/COs, 1st Cavalry Division - "Maverick"
    "HHC", 1st Cavalry Division          08 Mar '91-------------'99 (Con't next era)
 
    Band, 1st Cavalry Division           08 Mar '91-------------'99 (Con't next era)
 
    1st Cavalry Horse Detachment         08 Mar '91-------------'99 (Con't next era)

    4th Battalion, 5th Air Defense       06 Apr '91-------------'99 (Con't next era)
        "HHB", 4th Bn, 5th Air Defense
        "A" Btry, 4th Bn, 5th Air Defense
        "B" Btry, 4th Bn, 5th Air Defense
        "C" Btry, 4th Bn, 5th Air Defense
        "D" Btry, 4th Bn, 5th Air Defense

    13th Signal Battalion                15 Mar '91-------------'99 (Con't next era)
        "HHC", 13th Signal Bn
        "A" Co, 13th Signal Bn
        "B" Co, 13th Signal Bn
        "C" Co, 13th Signal Bn
        "D" Co, 13th Signal Bn

    312th Mltry Intelligence Battalion   06 Apr '91-------------'99 (Con't next era)
        "HHC", 312th Mltry Intelligence Bn    
        "A" Co, 312th Mltry Intelligence Bn
        "B" Co, 312th Mltry Intelligence Bn
        "C" Co, 312th Mltry Intelligence Bn
        "D" Co, 312th Mltry Intelligence Bn

    545th Mltry Police Company           20 Mar '91-------------'99 (Con't next era)

=============================================================================================================

TODAY'S CAVALRY
01 October 1999 +

TIME LINE ----------------------------- 01 Oct 1999000102030405060708091011121314151617181920

SEPARATE BNs/COs, 1st Cavalry Division - "Maverick"
    "HHC", 1st Cavalry Division          01 Oct '99/-----
 
    Band, 1st Cavalry Division           01 Oct '99/-----
 
    1st Cavalry Horse Detachment         01 Oct '99/-----

    4th Battalion, 5th Air Defense       01 Oct '99/-----
        "HHB", 4th Bn, 5th Air Defense
        "A" Btry, 4th Bn, 5th Air Defense
        "B" Btry, 4th Bn, 5th Air Defense
        "C" Btry, 4th Bn, 5th Air Defense
        "D" Btry, 4th Bn, 5th Air Defense

    13th Signal Battalion                01 Oct '99/-----
        "HHC", 13th Signal Bn
        "A" Co, 13th Signal Bn
        "B" Co, 13th Signal Bn
        "C" Co, 13th Signal Bn
        "D" Co, 13th Signal Bn

    312th Mltry Intelligence Battalion   01 Oct '99/-----
        "HHC", 312th Mltry Intel Bn
        Analysis Control Element (Prov)  15 Oct '99/-----
        "A" Co, 312th Mltry Intel Bn
        "B" Co, 312th Mltry Intel Bn
        "C" Co, 312th Mltry Intel Bn
        "D" Co, 312th Mltry Intel Bn

    545th Mltry Police Company           01 Oct '99/-----

=============================================================================================================

NOTE: The following Abbreviations Apply:

Absrb'd   Absorbed                     Det       Detachment                    Reasgn'd  Reassigned
Actv'd    Activated                    Dfnse     Defense                       Regt      Regiment
Arty      Artillery                    Hdqtrs    Headquarters                  Relv'd    Relieved
Asgn'd    Assigned                     Inactv'd  Inactivated                   Reorg'd   Reorganized
Asgm't    Assignment                   Intel     Intelligence                  Replc'd   Replaced
Atchm't   Attachment                   Maint     Maintenance                   Ret'rd    Returned
Avn       Aviation                     Med       Medium                        Spc'l     Special
Bn        Battalion                    Mltry     Military                      Sqdn      Squadron
Btry      Battery                      Plt       Platoon                       Supt      Support
Co        Company                      Prov      Provisional                   Xfer'd    Transferred
Cmd       Command                      QtrMstr   Quartermaster                 Trans     Transportation
Dsng'd    Designated                   Recon     Reconnaissance                Trp       Troop

---- SOURCES ----

"1st Cavalry Division"; Prepared by Information Section, Headquarters, 1st Cavalry Division - Korea 1958 (Revised 1960)

Bluhm, Col Raymond K. Jr., Historical Services Branch Chief; "1st Cavalry Division Organizational History", Center of Military History - 22 September 1992

Cole, LTC (Retired) Hilbert H.; "9th (Air) Cavalry Brigade (Provisional) Combat Operations After Action Report", Minerva Press - London, UK 1995

Conn, Stetson, editor; "Army Lineage Series", U.S. Government Printing Office - Washington, DC 1974

Dunn, Si; "First Team - History of the 1st Cavalry Division", Taylor Publishing Company - Dallas, TX 1984

Dzwonchyk, Wayne E., editor; "Army Lineage Series, Aviation", U.S. Government Printing Office - Washington, DC 1986

McKenny, Janice E., editor; "Army Lineage Series, Field Artillery - Regular Army and Army Reserve", U.S. Government Printing Office - Washington, DC 1984

Phillipos, J. E. and Gregory, R. M.; "America's First Team in the Gulf", Taylor Publishing Co. - Dallas, TX 1992

Shelby, Stanton L.; "Anatomy of a Division - The 1st Cavalry in Vietnam", Presidio Press - Novato, CA 1987.

Shelby, Stanton L.; "Vietnam Order of Battle", Galahand Books, New York, NY 1987

Shane, Jerry W.; "Private Data Base Collection - the 1st Cavalry Division, attached units 1950 - 1953", - Scottsdale, AZ 19 May, 1998

Stubbs, Mary Lee and Connor, Stanley Russell, editors; "Army Lineage Series, Armor/Cavalry - Regular Army and Army Reserve", U.S. Government Printing Office - Washington, DC 1984







Copyright © 1996, Cavalry Outpost Publications ® and Trooper Wm. H. Boudreau, "F" Troop, 8th Cavalry Regiment (1946 - 1947). All rights to this body of work are reserved and are not in the public domain, unless as noted in the bibliography. Reproduction, or transfer by electronic means, of the History of the Separate Battalions and Companies, 1st Cavalry Division or any internal element, is not permitted without prior authorization. Readers are encouraged to link to any of the pages of this Web site, provided that proper acknowledgment attributing to the source of the data is made. Other references to computer manufacturers or products use trademarks owned by their respective manufacturers. The technical information contained herein is subject to change without notice.

Revised 19 Aug '04