Infantry timelines · Infantry numbers 1–200

54th Infantry Regiment

A century of division assignments

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

54th Infantry Regiment unit graphic
54th Infantry Regiment
First division shown6th Infantry Division16 Nov 1917
Separate unit histories5 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 20 Sep 1943; 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 2d Battalion row traces Company B through the 61st and 561st Armored Infantry Battalions before its 1957 redesignation. Inactive paper assignments to the 71st Infantry and 10th Armored Divisions are explicitly labeled inactive.

Division patches

6th Infantry Division7th Infantry Division10th Armored Division71st Infantry Division4th 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 – 15 May 1917

    54th 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. 15 May 1917 – 16 Nov 1917

    54th Infantry Regiment

    Assignment not established

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

    Source

  3. 16 Nov 1917 – 24 Oct 1922

    54th Infantry Regiment

    6th Infantry Division

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

    Source

    Deployments & overseas operations

    1. 1918

      France

      54th Infantry Regiment · Campaign service

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

      Source
  4. 24 Oct 1922 – 24 Mar 1923

    54th Infantry Regiment

    Inactive · 6th Infantry Division

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

    Source

  5. 24 Mar 1923 – 1 Oct 1940

    54th Infantry Regiment

    Inactive · 7th Infantry Division

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

    Source

  6. 1 Oct 1940 – 15 Jul 1942

    54th 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

  7. 15 Jul 1942 – 20 Sep 1943

    54th Infantry Regiment

    10th Armored Division

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

    Source

  8. 20 Sep 1943 – 23 Oct 1945

    2d Battle Group / Battalion lineage

    10th 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

      2d Battle Group / Battalion lineage · Deployment / campaign service

      Company B of the 61st Armored Infantry Battalion earned Rhineland, Ardennes-Alsace and Central Europe campaign credit. The labeled service overlaps an assignment change and is listed only once; consult the following assignment cards as well.

      Source
  9. 23 Oct 1945 – 14 Sep 1950

    2d Battle Group / Battalion lineage

    Inactive · 10th Armored Division

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

    Source

  10. 14 Sep 1950 – 25 Feb 1953

    2d Battle Group / Battalion lineage

    Inactive · 71st Infantry Division

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

    Source

  11. 25 Feb 1953 – 1 Apr 1957

    2d Battle Group / Battalion lineage

    Inactive · 10th 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. 1 Apr 1957 – 23 Sep 1957

    2d 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

  13. 23 Sep 1957 – 15 Jul 1963

    2d 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

  14. 15 Jul 1963 – 10 May 1971

    2d Battle Group / Battalion lineage

    4th Armored Division

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

    Source

  15. 10 May 1971 – 28 Aug 1987

    2d 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

  16. 28 Aug 1987 – page cutoff*

    2d Battle Group / Battalion lineage

    Last documented: TRADOC · Training

    Institutional or training service. This is a command relationship, not a maneuver-division assignment. 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

  17. 31 Jul 2019 – page cutoff*

    3d Battle Group / Battalion lineage

    Last documented: TRADOC · Training

    Institutional or training service. This is a command relationship, not a maneuver-division assignment. 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

Service note · dates incomplete

1st Battle Group / Battalion lineage · Earlier armored lineage

The original 1st Battalion became the 61st Armored Infantry Battalion in 1943, later the 561st. This is separate from the later Company B lineage used by the modern 2d Battalion.

Source

Service note · dates incomplete

3d Battle Group / Battalion lineage · Earlier service

The headquarters lineage served in World War II and, after a 1966 activation, in Vietnam before inactivation in 1972. The later Army article dates its 2019 training activation to 31 July, rather than the August date in secondary accounts.

Source

Service note · dates incomplete

20th Armored Infantry Battalion · Predecessor · Armored successor

The former 2d Battalion became the 20th Armored Infantry Battalion in September 1943, later the 520th. It belonged to the 10th Armored Division.

Source

Service note · dates incomplete

54th Armored Infantry Battalion · Predecessor · Armored successor

The 54th Armored Infantry Battalion was another successor of the 1943 breakup. Postwar redesignations and inactive assignments are recorded in the parent certificate.

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: 54th Infantry Regiment
  2. Army Center of Military History: 2d Battalion 54th Infantry Regiment
  3. U.S. Army: 3d Battalion, 54th Infantry activation, July 2019

Patch artwork

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