108th Infantry Regiment
Assignment not established
The available record does not establish a precise assignment throughout this interval. No division is inferred.
First division shown27th Infantry Division1 Oct 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 1 Feb 1955; 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.
Approximate wartime windows identify documented affiliations within the labeled years. Their boundaries are coverage limits, not assignment or inactivation orders. Unverified intervals remain visible; common regimental service does not establish the later assignments of each battalion.
Division patches
27th Infantry Division
40th Infantry Division
27th Armored Division
50th Armored Division
42d Infantry DivisionRepresentative 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 – 1 Oct 1917
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1 Oct 1917 – 31 Mar 1919
108th Infantry Regiment
27th Infantry Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
Deployments & overseas operations
1918
France · World War I
108th Infantry Regiment · Deployment / campaign service
Includes combat or depot/replacement service as described in the regimental history; not every regiment fought as an intact formation.
Source
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31 Mar 1919 – 24 Apr 1920
108th 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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24 Apr 1920 – 17 Nov 1921
108th 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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17 Nov 1921 – 1 Sep 1942
108th Infantry Regiment
27th Infantry Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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1 Sep 1942 – 7 Apr 1946
108th Infantry Regiment
40th Infantry Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
Deployments & overseas operations
1944-1945
Pacific theater · World War II
108th Infantry Regiment · Deployment / campaign service
Selected campaign service; year labels do not specify exact departure and return dates.
Source
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7 Apr 1946 – 17 May 1947
108th Infantry Regiment
Inactive · 40th Infantry 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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17 May 1947 – 23 Jul 1947
108th Infantry Regiment
Inactive · 27th Infantry 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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23 Jul 1947 – 1 Feb 1955
108th Infantry Regiment
27th Infantry Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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16 Mar 1959 – 1 Feb 1968
1st Battle Group / Battalion lineage
27th Armored Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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1 Feb 1968 – 1 Apr 1975
1st Battle Group / Battalion lineage
50th Armored Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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1 Apr 1975 – 1 Apr 1986
1st Battle Group / Battalion lineage
42d Infantry Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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1 Apr 1986 – 1 Sep 2005
1st Battle Group / Battalion lineage
27th Infantry Brigade · Brigade assignment
This headquarters is not a division. Temporary attachments in the service entries below are distinct from the formal assignment.
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1 Sep 2005 – page cutoff*
1st Battle Group / Battalion lineage
Last documented: Inactive
The unit or its headquarters lineage was inactive. This status does not imply that every inherited honor or divisional affiliation was erased. 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 Mar 1959 – 1 Feb 1968
2d Battle Group / Battalion lineage
27th Armored Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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1 Feb 1968 – 1 Dec 1971
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.
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1 Dec 1971 – 1 Apr 1986
2d Battle Group / Battalion lineage
42d Infantry Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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1 Apr 1986 – 1 Sep 2005
2d Battle Group / Battalion lineage
27th Infantry Brigade · Brigade assignment
This headquarters is not a division. Temporary attachments in the service entries below are distinct from the formal assignment.
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1 Sep 2005 – page cutoff*
2d Battle Group / Battalion lineage
Last documented: 27th Infantry Brigade · Brigade assignment
This headquarters is not a division. Temporary attachments in the service entries below are distinct from the formal 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.
Deployments & overseas operations
2012
Afghanistan
2d Battle Group / Battalion lineage · Deployment / campaign service
Selected campaign service; year labels do not specify exact departure and return dates.
Source
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1 Apr 1986 – 1 Sep 1996
3d Battle Group / Battalion lineage
27th Infantry Brigade · Brigade assignment
This headquarters is not a division. Temporary attachments in the service entries below are distinct from the formal assignment.
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1 Sep 1996 – page cutoff*
3d Battle Group / Battalion lineage
Last documented: Inactive
The unit or its headquarters lineage was inactive. This status does not imply that every inherited honor or divisional affiliation was erased. 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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1 Feb 1955 – 16 Mar 1959
108th Armored Infantry Battalion · Predecessor
27th Armored Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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1 Feb 1955 – 16 Mar 1959
175th Armored Infantry Battalion · Predecessor
27th Armored Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
Sources and scope
Army Center of Military History lineage certificates, regimental associations and secondary histories document assignments, operations and battalions. Exact lineage dates and approximate historical coverage are distinguished. 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.
Patch artwork
Unmodified artwork from Wikimedia Commons; individual file pages identify the artist and license. Insignia represent the divisions, not regimental affiliation badges.
- 27th Infantry Division · file and credit · public domain
- 40th Infantry Division · file and credit · public domain
- 27th Armored Division · file and credit · public domain
- 50th Armored Division · file and credit · public domain
- 42d Infantry Division · file and credit · public domain
