48th 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.
First division shown20th Division (World War I)31 Jul 1918
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.
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.
At a glance
Assignments across time
Bar widths follow elapsed time.
Scroll horizontally on a small screen. Select a segment to open its dated entry. Diamond markers open deployments; their positions indicate the labeled year, not an exact start date or duration. Short assignments are easier to inspect in the list below.
- Division assignment
- 1st Infantry
- 2d Infantry
- 8th Infantry
- Separate headquarters
- Training / academy
- Inactive
- Unverified / last documented
Explore a date
Who were they with?
Look up the dated rows below. Service notes with incomplete dates are excluded; last-documented results do not certify a current assignment.
The dated record
Division timeline
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.
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1 Jan 1916 – 15 May 1917
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15 May 1917 – 31 Jul 1918
48th Infantry Regiment
Assignment not established
The available record does not establish a precise assignment throughout this interval. No division is inferred.
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31 Jul 1918 – 28 Feb 1919
48th Infantry Regiment
20th Division (World War I)
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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28 Feb 1919 – 14 Oct 1921
48th 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.
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14 Oct 1921 – 31 Jul 1922
48th 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.
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31 Jul 1922 – 27 Feb 1942
48th Infantry Regiment
Disbanded
The organization was removed from the rolls. A later reconstitution, if documented, is shown separately.
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27 Feb 1942 – 2 Mar 1942
48th Infantry Regiment
Inactive · 7th Armored Division
The unit was inactive but retained the division assignment shown. Paper assignments and Reserve-officer training are not active combat service.
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2 Mar 1942 – 20 Sep 1943
48th Infantry Regiment
7th Armored Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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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.
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23 Dec 1957 – 25 Feb 1958
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.
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25 Feb 1958 – 1 Apr 1958
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.
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1 Apr 1958 – 1 Sep 1963
1st 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.
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1 Sep 1963 – 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.
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16 Jun 1989 – 15 Apr 1996
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.
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15 Apr 1996 – page cutoff*
1st 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.
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16 Jun 2017 – 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.
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20 Sep 1943 – 11 Oct 1945
23d Armored Infantry Battalion · Predecessor
7th Armored Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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11 Oct 1945 – 24 Nov 1950
23d Armored Infantry Battalion · Predecessor
Inactive · 7th Armored Division
The unit was inactive but retained the division assignment shown. Paper assignments and Reserve-officer training are not active combat service.
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24 Nov 1950 – 15 Nov 1953
23d Armored Infantry Battalion · Predecessor
7th Armored Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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15 Nov 1953 – 15 Feb 1957
23d Armored Infantry Battalion · Predecessor
Inactive · 7th Armored Division
The unit was inactive but retained the division assignment shown. Paper assignments and Reserve-officer training are not active combat service.
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20 Sep 1943 – 11 Oct 1945
38th Armored Infantry Battalion · Predecessor
7th Armored Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
Deployments & overseas operations
1944-1945
Western Europe
38th Armored Infantry Battalion · Predecessor · Deployment / campaign service
The Company A lineage records western European campaigns, including the fighting at St. Vith. The labeled service overlaps an assignment change and is listed only once; consult the following assignment cards as well.
Source
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11 Oct 1945 – 24 Nov 1950
38th Armored Infantry Battalion · Predecessor
Inactive · 7th Armored Division
The unit was inactive but retained the division assignment shown. Paper assignments and Reserve-officer training are not active combat service.
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24 Nov 1950 – 15 Nov 1953
38th Armored Infantry Battalion · Predecessor
7th Armored Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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15 Nov 1953 – 15 Feb 1957
38th Armored Infantry Battalion · Predecessor
Inactive · 7th Armored Division
The unit was inactive but retained the division assignment shown. Paper assignments and Reserve-officer training are not active combat service.
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20 Sep 1943 – 8 Oct 1945
48th Armored Infantry Battalion · Predecessor
7th Armored Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
Deployments & overseas operations
1944
Vielsalm, Belgium
48th Armored Infantry Battalion · Predecessor · Deployment / campaign service
The 48th Armored Infantry Battalion fought at the Salm River during the Ardennes offensive.
Source
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8 Oct 1945 – 24 Nov 1950
48th Armored Infantry Battalion · Predecessor
Inactive · 7th Armored Division
The unit was inactive but retained the division assignment shown. Paper assignments and Reserve-officer training are not active combat service.
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24 Nov 1950 – 15 Nov 1953
48th Armored Infantry Battalion · Predecessor
7th Armored Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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15 Nov 1953 – 15 Feb 1957
48th Armored Infantry Battalion · Predecessor
Inactive · 7th Armored Division
The unit was inactive but retained the division assignment shown. Paper assignments and Reserve-officer training are not active combat service.
Service note · dates incomplete
2d Battle Group / Battalion lineage · Germany and training
The 2d Battalion served in the 3d Armored Division in Germany and inactivated on 15 October 1991. A training battalion was reactivated at Fort Leonard Wood in June 2017.
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.
- Army Center of Military History: 48th Infantry Regiment
- Army Center of Military History: 1st Battalion 48th Infantry Regiment
- U.S. Army: 2d Battalion, 48th Infantry activation, June 2017
- 48th Infantry Regiment history (Wikipedia; secondary)
Patch artwork
Unmodified artwork from Wikimedia Commons; individual file pages identify the artist and license. Insignia represent the divisions, not regimental affiliation badges.
- 7th Armored Division · file and credit · public domain
- 1st Armored Division · file and credit · CC BY-SA 4.0 (Noclador; unmodified)
- 3d Armored Division · file and credit · public domain
