156th Infantry Regiment Battalions
Modern Era, United States, Infantry
This page collects the existing battalion illustrations and additional documented historical battalions of the 156th Infantry Regiment. The historical entries include inactive units and earlier designations; the regimental image identifies entries without a battalion-specific illustration.
1st Battalion, 156th Infantry Regiment
This entry now anchors the battalion page in the regiment's origin or defining early identity, giving the 1st Battalion slot a more specific historical frame than the first scaffold pass.
The 156th Infantry Regiment forms part of the Army's enduring lineage structure, preserving an older regimental identity within the modern force.
2d Battalion, 156th Infantry Regiment
The 2d Battalion entry uses the regiment's middle or operational arc to give the page a clearer sense of how the parent unit developed over time.
Its record was carried forward through redesignation and reorganization, a pattern typical of many regiments whose heritage outlasted their original wartime form.
3d Battalion, 156th Infantry Regiment
The 3d Battalion entry now carries the regiment into its later or enduring modern identity, tightening the page around the way the lineage is remembered in the modern Army.
The 156th Infantry remains embedded in the Army's regimental tradition.
4th Battalion, 156th Infantry Regiment
The 4th Battalion served with the 39th Infantry Division from May 1963 until the December 1967 reorganization.
The Louisiana regiment again included a 4th Battalion from July 1991 to February 1993. Regimental history (Wikipedia).
Research note: The added historical entries cite their sources individually. Regimental illustrations are labeled as such. An earlier battalion designation can continue through another battalion or a separate battery; these relationships are identified in the entries. The original three entries are retained; the additional entries do not treat regimental campaign credits as evidence that every battalion fought in those campaigns.
Division timeline, 1916–2026 · assignments, patches and deployments →