39th Infantry Regiment
Modern Era, United States, Infantry
The 39th Infantry Regiment was organized during World War I and became one of the regiments shaped entirely by the twentieth-century Army. Its most important service came through divisional assignments rather than through a long independent regimental tradition.
The regiment and its battalions later appeared in World War II, Vietnam-era service, and the training and operational Army that followed. As with several other lineages in this number range, the regiment's history survives mainly through battalion descendants and unit tradition rather than through one uninterrupted regimental combat career.
The 39th Infantry reflects the Army's move into industrial-era warfare and then into the later modular force, where old regimental names remained important carriers of institutional memory.
Battalion Page
The battalion subpage collects the regiment's battalion illustrations and additional historical entries with sources. Open the 39th Infantry Regiment Battalions page.
Division timeline, 1916–2026 · assignments, patches and deployments →