43d 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 shownPhilippine Division22 Oct 1921
Separate unit histories4 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 25 Oct 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.
Only the 1st Battalion returned to active service in 1941. Postwar reorganization is dated only to 1946 here. The 96th, 97th and 98th Infantry Battalions (Philippine Scouts) succeeded the regiment in 1947; they are not battalions numbered 96-98 within this regiment.
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 – 1 Jun 1917
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1 Jun 1917 – 22 Oct 1921
43d 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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22 Oct 1921 – 30 Sep 1922
43d Infantry Regiment
Philippine Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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30 Sep 1922 – 26 Jun 1931
43d 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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26 Jun 1931 – 1 Jan 1946
43d Infantry Regiment
Inactive · Philippine 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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1 Jan 1946 – 1 Jan 1947
43d 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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1 Jan 1947 – 25 Oct 1947
43d Infantry Regiment
Philippine Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
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1 Apr 1941 – 1 May 1942
1st Battle Group / Battalion lineage
Philippine Division
Division names are normalized across historical redesignations. This entry follows the cited unit lineage.
Deployments & overseas operations
1941-1942
Philippines
1st Battle Group / Battalion lineage · Deployment / campaign service
Detachments fought in northern Luzon and Mindanao. Some survivors continued as guerrillas after the organized surrender. The labeled service overlaps an assignment change and is listed only once; consult the following assignment cards as well.
Source
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1 May 1942 – 1 Jun 1942
1st Battle Group / Battalion lineage
Assignment not established
The available record does not establish a precise assignment throughout this interval. No division is inferred.
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1 Jun 1942 – 1 Jan 1946
1st Battle Group / Battalion lineage
Surrendered · Captivity and surviving detachments
Organized resistance ended in surrender. Captivity and surviving detachments are not treated as normal divisional service or a formal inactivation order.
Service note · dates incomplete
96th Infantry Battalion (Philippine Scouts) · Successor · Postwar successor
The 1st Battalion became the 96th Infantry Battalion on 25 October 1947. The Scout successors inactivated in May 1949 and disbanded in 1951.
Service note · dates incomplete
97th Infantry Battalion (Philippine Scouts) · Successor · Postwar successor
The 2d Battalion became the 97th Infantry Battalion on 25 October 1947. Its later inactivation and disbandment followed those of the other Scout successor battalions.
Service note · dates incomplete
98th Infantry Battalion (Philippine Scouts) · Successor · Postwar successor
The 3d Battalion became the 98th Infantry Battalion on 25 October 1947.
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.
- Philippine Scouts Heritage Society: 43rd Infantry
- 43d 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.
- Philippine Division · file and credit · public domain
