4:1st Infantry

The 4th Battalion, 1st Infantry Regiment (4/1st Infantry) boasts a storied history dating back to its origins in the early 19th century as part of the Army’s oldest regular infantry regiment. The unit has participated in numerous conflicts, including the Mexican-American War, Civil War, World Wars I and II, and the Vietnam War, earning multiple campaign streamers and decorations for its valor. In more recent decades, 4/1st Infantry has served in operations in the Middle East, supporting missions in Iraq and Afghanistan as part of modern modular Brigade Combat Teams. Throughout its service, the battalion has built a reputation for professionalism, adaptability, and unwavering commitment to mission success.