75th 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 shown13th Division (World War I)1 Sep 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. Battalion rows follow headquarters lineages, often descended from lettered companies, rather than assuming that the old regimental battalions continued unchanged.
The World War I 75th Infantry did not become the Ranger regiment. The Ranger lineage begins with the 5307th Composite Unit in 1943 and continues through the 475th Infantry. Ranger battalion rows include their lettered-company predecessors; regimental affiliation is not division assignment.
Division patches
Division names appear in the timeline. No verified patch artwork is included for these assignments.
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.
-
1 Jan 1916 – 10 Jul 1918
-
10 Jul 1918 – 1 Sep 1918
75th Infantry Regiment
Assignment not established
The available record does not establish a precise assignment throughout this interval. No division is inferred.
-
1 Sep 1918 – 27 Feb 1919
75th Infantry Regiment
13th Division (World War I)
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
-
27 Feb 1919 – 18 Jul 1941
75th Infantry Regiment
Disbanded
The organization was removed from the rolls. A later reconstitution, if documented, is shown separately.
-
18 Jul 1941 – 4 Aug 1952
75th 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.
-
4 Aug 1952 – page cutoff*
75th Infantry Regiment
Last documented: Disbanded
The organization was removed from the rolls. A later reconstitution, if documented, is shown separately. 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.
-
1 Feb 1969 – 25 Oct 1971
Company C, 75th Infantry / 1st Ranger 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.
Deployments & overseas operations
1969-1971
Vietnam · Company C predecessor
Company C, 75th Infantry / 1st Ranger Battalion lineage · Deployment / campaign service
Company C, 75th Infantry, carried the lineage later redesignated as 1st Battalion. The labeled service overlaps an assignment change and is listed only once; consult the following assignment cards as well.
Source
-
25 Oct 1971 – 31 Jan 1974
Company C, 75th Infantry / 1st Ranger 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.
-
31 Jan 1974 – 3 Feb 1986
Company C, 75th Infantry / 1st Ranger 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.
Deployments & overseas operations
1983
Grenada
Company C, 75th Infantry / 1st Ranger Battalion lineage · Deployment / campaign service
Rangers participated in Operation Urgent Fury.
Source
-
3 Feb 1986 – page cutoff*
Company C, 75th Infantry / 1st Ranger Battalion lineage
Last documented: No assigned division
The cited record establishes service outside an assigned division. Higher headquarters and temporary operational attachments could still direct the unit. 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.
-
1 Feb 1969 – 15 Aug 1972
Company H, 75th Infantry / 2d Ranger 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.
Deployments & overseas operations
1969-1972
Vietnam · Company H predecessor
Company H, 75th Infantry / 2d Ranger Battalion lineage · Deployment / campaign service
Company H, 75th Infantry, carried the later 2d Battalion lineage. The labeled service overlaps an assignment change and is listed only once; consult the following assignment cards as well.
Source
-
15 Aug 1972 – 1 Oct 1974
Company H, 75th Infantry / 2d Ranger 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.
-
1 Oct 1974 – 3 Feb 1986
Company H, 75th Infantry / 2d Ranger 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.
Deployments & overseas operations
1983
Grenada
Company H, 75th Infantry / 2d Ranger Battalion lineage · Deployment / campaign service
Rangers participated in Operation Urgent Fury.
Source
-
3 Feb 1986 – page cutoff*
Company H, 75th Infantry / 2d Ranger Battalion lineage
Last documented: No assigned division
The cited record establishes service outside an assigned division. Higher headquarters and temporary operational attachments could still direct the unit. 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.
-
1 Feb 1969 – 15 Mar 1971
Company F, 75th Infantry / 3d Ranger 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.
Deployments & overseas operations
1969-1971
Vietnam · Company F predecessor
Company F, 75th Infantry / 3d Ranger Battalion lineage · Deployment / campaign service
Company F, 75th Infantry, carried the later 3d Battalion lineage. The labeled service overlaps an assignment change and is listed only once; consult the following assignment cards as well.
Source
-
15 Mar 1971 – 2 Oct 1984
Company F, 75th Infantry / 3d Ranger 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.
-
2 Oct 1984 – 3 Feb 1986
Company F, 75th Infantry / 3d Ranger 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.
-
3 Feb 1986 – page cutoff*
Company F, 75th Infantry / 3d Ranger Battalion lineage
Last documented: No assigned division
The cited record establishes service outside an assigned division. Higher headquarters and temporary operational attachments could still direct the unit. 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
1993
Somalia
Company F, 75th Infantry / 3d Ranger Battalion lineage · Deployment / campaign service
Elements deployed with Task Force Ranger.
Source
-
1 Feb 1969 – 31 Aug 1971
Company P / Ranger Military Intelligence 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.
Deployments & overseas operations
1969-1971
Vietnam · Company P predecessor
Company P / Ranger Military Intelligence Battalion lineage · Deployment / campaign service
Service belongs to the company predecessor, not a Military Intelligence Battalion already bearing that title. The labeled service overlaps an assignment change and is listed only once; consult the following assignment cards as well.
Source
-
31 Aug 1971 – 16 Jun 2020
Company P / Ranger Military Intelligence 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.
-
16 Jun 2020 – page cutoff*
Company P / Ranger Military Intelligence Battalion lineage
Last documented: No assigned division
The cited record establishes service outside an assigned division. Higher headquarters and temporary operational attachments could still direct the unit. 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.
-
3 Oct 1943 – 1 Jul 1945
5307th Composite Unit / 475th Infantry / 75th Rangers · Separate lineage
No assigned division
The cited record establishes service outside an assigned division. Higher headquarters and temporary operational attachments could still direct the unit.
Deployments & overseas operations
1944-1945
Burma
5307th Composite Unit / 475th Infantry / 75th Rangers · Separate lineage · Deployment / campaign service
The 5307th Composite Unit and its 475th Infantry successor fought in the China-Burma-India theater. The labeled service overlaps an assignment change and is listed only once; consult the following assignment cards as well.
Source
-
1 Jul 1945 – 20 Nov 1954
5307th Composite Unit / 475th Infantry / 75th Rangers · Separate lineage
Inactive
The unit or its headquarters lineage was inactive. This status does not imply that every inherited honor or divisional affiliation was erased.
-
20 Nov 1954 – 21 Mar 1956
5307th Composite Unit / 475th Infantry / 75th Rangers · Separate lineage
No assigned division
The cited record establishes service outside an assigned division. Higher headquarters and temporary operational attachments could still direct the unit.
-
21 Mar 1956 – 1 Jan 1969
5307th Composite Unit / 475th Infantry / 75th Rangers · Separate lineage
Inactive
The unit or its headquarters lineage was inactive. This status does not imply that every inherited honor or divisional affiliation was erased.
-
1 Jul 1984 – 3 Feb 1986
5307th Composite Unit / 475th Infantry / 75th Rangers · Separate lineage
No assigned division
The cited record establishes service outside an assigned division. Higher headquarters and temporary operational attachments could still direct the unit.
-
3 Feb 1986 – page cutoff*
5307th Composite Unit / 475th Infantry / 75th Rangers · Separate lineage
Last documented: No assigned division
The cited record establishes service outside an assigned division. Higher headquarters and temporary operational attachments could still direct the unit. 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
1989
Panama
5307th Composite Unit / 475th Infantry / 75th Rangers · Separate lineage · Deployment / campaign service
The regiment participated in Operation Just Cause.
Source2001
Afghanistan
5307th Composite Unit / 475th Infantry / 75th Rangers · Separate lineage · Deployment / campaign service
Ranger operations opened a long period of repeated deployments; this marker is not a continuous tour.
Source2003
Iraq
5307th Composite Unit / 475th Infantry / 75th Rangers · Separate lineage · Deployment / campaign service
Rangers participated in the opening operations in Iraq.
Source
-
1 Feb 1969 – 25 Aug 1971
Company N / Ranger Special Troops 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.
Deployments & overseas operations
1969-1971
Vietnam · Company N predecessor
Company N / Ranger Special Troops Battalion lineage · Deployment / campaign service
Service belongs to the lettered-company predecessor, not a Special Troops Battalion already bearing that title. The labeled service overlaps an assignment change and is listed only once; consult the following assignment cards as well.
Source
-
25 Aug 1971 – 16 Oct 2007
Company N / Ranger Special Troops 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.
-
16 Oct 2007 – page cutoff*
Company N / Ranger Special Troops Battalion lineage
Last documented: No assigned division
The cited record establishes service outside an assigned division. Higher headquarters and temporary operational attachments could still direct the unit. 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.
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.
- U.S. Army: Ranger heritage and overseas operations
- 75th Infantry Regiment history (Wikipedia; secondary)
- 75th Infantry Regiment · U.S. Army lineage
- 1st Battalion 75th Infantry Regiment · U.S. Army lineage
- 2d Battalion 75th Infantry Regiment · U.S. Army lineage
- 3d Battalion 75th Infantry Regiment · U.S. Army lineage
- Military Intelligence Battalion 75th Infantry Regiment · U.S. Army lineage
- Special Troops Battalion 75th Infantry Regiment · U.S. Army lineage
Patch artwork
Unmodified artwork from Wikimedia Commons; individual file pages identify the artist and license. Insignia represent the divisions, not regimental affiliation badges.