Infantry timelines · Infantry numbers 1–200

17th Infantry Regiment

A century of division assignments

1916–2026 · Regimental service, battle groups, battalions and deployments.

17th Infantry Regiment unit graphic
17th Infantry Regiment
First division shown11th Division (World War I)5 Jul 1918
Separate battalion histories2 documented elementsDated lineages and service notes below
Page cutoff8 September 2026Last-documented status is explicitly marked

One regiment, separate assignments

The common row follows the regiment. After its reorganization, battle groups and battalions could hold different assignments at the same time. A deployment or temporary attachment does not by itself change the assigned division. The common row closes on 1 Jul 1957; later service belongs to the separate element rows. Battalion rows follow headquarters lineages, often descended from lettered companies, rather than assuming that the old regimental battalions continued unchanged.

Division patches

11th Division (World War I)7th Infantry Division6th Infantry Division2d Infantry Division1st Armored Division

Representative division patches. Patterns could change over time; an image does not imply that the exact version was worn throughout every period. Divisions without a verified asset remain identified by name.

The dated record

Division timeline

Battalion overview →

Deployments, operations and credited campaign service appear inside assignment cards. Award years establish credited service, not exact tour dates. Some service notes identify only company-sized elements. This is a sourced selection, not a complete movement log.

Assignment ends are exclusive: the next period starts on that date. *Striped final bars mean last documented, with later status unverified through the page cutoff. Unknown intervals are not treated as inactive.

  1. 1 Jan 1916 – 5 Jul 1918

    17th Infantry Regiment

    Assignment not established

    The available record does not establish a precise assignment throughout this interval. No division is inferred.

    Source

  2. 5 Jul 1918 – 24 Mar 1923

    17th Infantry Regiment

    11th Division (World War I)

    Division names are normalized across historical redesignations. This entry follows the cited unit lineage.

    Source

  3. 24 Mar 1923 – 15 Aug 1927

    17th Infantry Regiment

    7th Infantry Division

    Division names are normalized across historical redesignations. This entry follows the cited unit lineage.

    Source

  4. 15 Aug 1927 – 1 Oct 1933

    17th Infantry Regiment

    6th Infantry Division

    Division names are normalized across historical redesignations. This entry follows the cited unit lineage.

    Source

  5. 1 Oct 1933 – 1 Jul 1957

    17th Infantry Regiment

    7th Infantry Division

    Division names are normalized across historical redesignations. This entry follows the cited unit lineage.

    Source

    Deployments & overseas operations

    1. 1943-1945

      Aleutian Islands, Eastern Mandates, Leyte and Ryukyus

      17th Infantry Regiment · Campaign service

      Campaign participation is recorded in the Army lineage. The year label summarizes campaign service, not an exact overseas tour.

      Source

    2. 1950-1953

      Korea

      17th Infantry Regiment · Campaign service

      Campaign participation is recorded in the Army lineage. The year label summarizes campaign service, not an exact overseas tour.

      Source
  6. 1 Jul 1957 – 31 Mar 1971

    1st Battle Group / Battalion lineage

    7th Infantry Division

    Division names are normalized across historical redesignations. This entry follows the cited unit lineage.

    Source

  7. 31 Mar 1971 – 16 Aug 1986

    1st Battle Group / Battalion lineage

    2d Infantry Division

    Division names are normalized across historical redesignations. This entry follows the cited unit lineage.

    Source

  8. 16 Aug 1986 – 16 Nov 1986

    1st Battle Group / Battalion lineage

    Inactive

    The unit or its headquarters lineage was inactive. This status does not imply that every inherited honor or divisional affiliation was erased.

    Source

  9. 16 Nov 1986 – 16 Apr 1998

    1st Battle Group / Battalion lineage

    6th Infantry Division

    Division names are normalized across historical redesignations. This entry follows the cited unit lineage.

    Source

  10. 16 Apr 1998 – 16 Dec 2006

    1st Battle Group / Battalion lineage

    172d Infantry Brigade · Separate

    This headquarters is not a division. Temporary attachments in the service entries below are distinct from the formal assignment.

    Source

  11. 16 Dec 2006 – 17 Apr 2007

    1st Battle Group / Battalion lineage

    Inactive

    The unit or its headquarters lineage was inactive. This status does not imply that every inherited honor or divisional affiliation was erased.

    Source

  12. 17 Apr 2007 – 22 Jul 2010

    1st Battle Group / Battalion lineage

    2d Infantry Division

    Division names are normalized across historical redesignations. This entry follows the cited unit lineage.

    Source

    Deployments & overseas operations

    1. 2009

      Arghandab and Shah Wali Kot, Afghanistan

      1st Battle Group / Battalion lineage · Combat operations

      The Army's Combat Studies Institute documents the battalion's operations in these districts during autumn 2009. This marker does not define the entire tour.

      Source
  13. 22 Jul 2010 – page cutoff*

    1st Battle Group / Battalion lineage

    Last documented: 2d Infantry Division

    Division names are normalized across historical redesignations. This entry follows the cited unit lineage. The source establishes this last recorded status, not uninterrupted service through 2026. The striped bar extends to the page cutoff to keep the later research gap visible.

    Source

  14. 1 Jul 1957 – 24 Jun 1960

    4th Battle Group / Battalion lineage

    Inactive

    The unit or its headquarters lineage was inactive. This status does not imply that every inherited honor or divisional affiliation was erased.

    Source

  15. 24 Jun 1960 – 26 Dec 1964

    4th Battle Group / Battalion lineage

    No assigned division

    The cited record establishes service outside an assigned division. Higher headquarters and temporary operational attachments could still direct the unit.

    Source

  16. 26 Dec 1964 – 15 May 1965

    4th Battle Group / Battalion lineage

    Inactive

    The unit or its headquarters lineage was inactive. This status does not imply that every inherited honor or divisional affiliation was erased.

    Source

  17. 15 May 1965 – 21 Feb 1969

    4th Battle Group / Battalion lineage

    No assigned division

    The cited record establishes service outside an assigned division. Higher headquarters and temporary operational attachments could still direct the unit.

    Source

  18. 21 Feb 1969 – 30 Jun 1971

    4th Battle Group / Battalion lineage

    Inactive

    The unit or its headquarters lineage was inactive. This status does not imply that every inherited honor or divisional affiliation was erased.

    Source

  19. 30 Jun 1971 – 16 Aug 1972

    4th Battle Group / Battalion lineage

    No assigned division

    The cited record establishes service outside an assigned division. Higher headquarters and temporary operational attachments could still direct the unit.

    Source

  20. 16 Aug 1972 – 16 Mar 1985

    4th Battle Group / Battalion lineage

    Inactive

    The unit or its headquarters lineage was inactive. This status does not imply that every inherited honor or divisional affiliation was erased.

    Source

  21. 16 Mar 1985 – 15 Sep 1993

    4th Battle Group / Battalion lineage

    7th Infantry Division

    Division names are normalized across historical redesignations. This entry follows the cited unit lineage.

    Source

  22. 15 Sep 1993 – 16 Jan 2011

    4th Battle Group / Battalion lineage

    Inactive

    The unit or its headquarters lineage was inactive. This status does not imply that every inherited honor or divisional affiliation was erased.

    Source

  23. 16 Jan 2011 – page cutoff*

    4th Battle Group / Battalion lineage

    Last documented: 1st Armored Division

    Division names are normalized across historical redesignations. This entry follows the cited unit lineage. The source establishes this last recorded status, not uninterrupted service through 2026. The striped bar extends to the page cutoff to keep the later research gap visible.

    Source

Sources and scope

Army Center of Military History lineage certificates provide the dated backbone. Regimental associations and secondary histories supplement individual operations and battalions. Where the evidence stops, the page says so. A page cutoff is not a claim that every unit directory was current on that date.

Earlier battalions are covered by common regimental service; separately dated lineages and substantiated later battalions receive their own rows or notes. A unit graphic alone is not evidence of a battalion assignment. Reserve, training and inactive organizations are distinguished from active combat units.

  1. U.S. Army Center of Military History: 17th Infantry Regiment
  2. U.S. Army Center of Military History: 1st Battalion 17th Infantry Regiment
  3. U.S. Army Center of Military History: 4th Battalion 17th Infantry Regiment
  4. U.S. Army Combat Studies Institute: Strykers in Afghanistan

Patch artwork

Unmodified artwork from Wikimedia Commons; individual file pages identify the artist and license. Insignia represent the divisions, not regimental affiliation badges.