Infantry timelines · Infantry numbers 1–200

36th Infantry Regiment

A century of division assignments

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

36th Infantry Regiment unit graphic
36th Infantry Regiment
First division shown12th Division (World War I)5 Jul 1918
Separate unit histories6 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 7 Jul 1947; 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.

The 1947 successor battalions were the 36th, 37th and 13th Armored Infantry Battalions. Their numbers are not additional battalions of the modern 37th or 13th Infantry regiments. The 1st Battalion row follows Company A after it separated in February 1957.

Division patches

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 – 1 Jul 1916

    36th Infantry Regiment

    Not yet constituted / organized

    This timeline begins in 1916. The cited organization had not yet been constituted or organized during this interval; its formation follows.

    Source

  2. 1 Jul 1916 – 5 Jul 1918

    36th Infantry Regiment

    Assignment not established

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

    Source

  3. 5 Jul 1918 – 31 Jan 1919

    36th Infantry Regiment

    12th Division (World War I)

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

    Source

  4. 31 Jan 1919 – 13 Oct 1921

    36th Infantry Regiment

    No assigned division

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

    Source

  5. 13 Oct 1921 – 24 Mar 1923

    36th Infantry Regiment

    Inactive

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

    Source

  6. 24 Mar 1923 – 1 Aug 1940

    36th Infantry Regiment

    Inactive · 9th Infantry Division

    The unit was inactive but retained the division assignment shown. Paper assignments and Reserve-officer training are not active combat service.

    Source

  7. 1 Aug 1940 – 15 Apr 1941

    36th Infantry Regiment

    Inactive

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

    Source

  8. 15 Apr 1941 – 10 Nov 1945

    36th Infantry Regiment

    3d Armored Division

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

    Source

    Deployments & overseas operations

    1. 1944-1945

      Western Europe

      36th Infantry Regiment · Campaign service

      Campaign participation is recorded in the cited history. The year label summarizes campaign service, not an exact overseas tour. The labeled service overlaps an assignment change and is listed only once; consult the following assignment cards as well.

      Source
  9. 10 Nov 1945 – 7 Jul 1947

    36th Infantry Regiment

    Inactive

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

    Source

  10. 15 Feb 1957 – 23 Dec 1957

    1st Battle Group / Battalion lineage

    1st Armored Division

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

    Source

  11. 23 Dec 1957 – 3 Feb 1962

    1st Battle Group / Battalion lineage

    Inactive · 1st Armored Division

    The unit was inactive but retained the division assignment shown. Paper assignments and Reserve-officer training are not active combat service.

    Source

  12. 3 Feb 1962 – 16 Jun 1989

    1st Battle Group / Battalion lineage

    3d Armored Division

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

    Source

  13. 16 Jun 1989 – 16 Feb 1997

    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

  14. 16 Feb 1997 – 16 Sep 2008

    1st Battle Group / Battalion lineage

    1st Armored Division

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

    Source

    Deployments & overseas operations

    1. 2004

      Iraq

      1st Battle Group / Battalion lineage · Credited overseas service

      The Army lineage lists a unit decoration for service in these years. These are credited service years, not exact deployment and return dates.

      Source
  15. 16 Sep 2008 – page cutoff*

    1st 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

  16. 7 Jul 1947 – 15 Jul 1947

    13th Armored Infantry Battalion · Predecessor

    Inactive · 3d Armored Division

    The unit was inactive but retained the division assignment shown. Paper assignments and Reserve-officer training are not active combat service.

    Source

  17. 15 Jul 1947 – 1 Oct 1957

    13th Armored Infantry Battalion · Predecessor

    3d Armored Division

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

    Source

  18. 7 Jul 1947 – 15 Jul 1947

    36th Armored Infantry Battalion · Predecessor

    Inactive · 3d Armored Division

    The unit was inactive but retained the division assignment shown. Paper assignments and Reserve-officer training are not active combat service.

    Source

  19. 15 Jul 1947 – 1 Oct 1957

    36th Armored Infantry Battalion · Predecessor

    3d Armored Division

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

    Source

  20. 7 Jul 1947 – 15 Jul 1947

    37th Armored Infantry Battalion · Predecessor

    Inactive · 3d Armored Division

    The unit was inactive but retained the division assignment shown. Paper assignments and Reserve-officer training are not active combat service.

    Source

  21. 15 Jul 1947 – 1 Oct 1957

    37th Armored Infantry Battalion · Predecessor

    3d Armored Division

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

    Source

Service note · dates incomplete

2d Battle Group / Battalion lineage · Wartime successor

In 1947 the former 2d Battalion became the 37th Armored Infantry Battalion. Its numbered successor row appears above; this is not the separate 37th Infantry Regiment.

Source

Service note · dates incomplete

3d Battle Group / Battalion lineage · Wartime successor

In 1947 the former 3d Battalion became the 13th Armored Infantry Battalion in the 3d Armored Division.

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. Army Center of Military History: 36th Infantry Regiment
  2. Army Center of Military History: 1st Battalion 36th Infantry Regiment

Patch artwork

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