About this Unit
D31 OSUT (One Station Unit Training) at Fort Leonard Wood is a U.S. Army training unit responsible for transforming civilian recruits into combat-ready Soldiers. Located at Fort Leonard Wood, Missouri, D31 OSUT provides a combined Basic Combat Training (BCT) and Advanced Individual Training (AIT) experience, primarily for Military Occupational Specialties such as Combat Engineer (12B) and Military Police (31B). The unit has a proud history of instilling discipline, technical skills, and Army values in its trainees. Over the years, D31 OSUT has played a vital role in preparing Soldiers for service in various operations and deployments worldwide.
Historical Facts
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OSUT Explained: D31 OSUT stands for Delta Company, 3rd Battalion, 1st Infantry Regiment, part of the One Station Unit Training (OSUT) at Fort Leonard Wood. OSUT combines Basic Combat Training (BCT) and Advanced Individual Training (AIT) into one seamless course for Infantry and select other Army specialties.
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Historic Roots: The 1st Infantry Regiment, to which D31 belongs, traces its lineage back to 1791, making it one of the oldest continuously serving regiments in the U.S. Army.
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Fort Leonard Wood’s Transformation: Originally established in 1940, Fort Leonard Wood has evolved into a major training center for Army Engineers, Military Police, and Chemical Corps, in addition to Infantry OSUT.
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Training Length: D31 OSUT typically lasts 22 weeks, combining both basic and advanced infantry skills, including weapons training, tactical exercises, and physical conditioning.
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Notable Alumni: Many soldiers who trained in D31 OSUT have gone on to serve in conflict zones such as Iraq and Afghanistan, contributing to notable missions and operations across the globe.
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The Gauntlet: One of the most challenging parts of D31 OSUT is “The Gauntlet,” a rigorous multi-day field exercise that tests everything trainees have learned before graduation.
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Distinctive Drill Sergeants: Drill sergeants in D31 are known for their discipline and high expectations, often earning reputations for forging strong, resilient soldiers.
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Esprit de Corps: D31 OSUT is known for fostering a strong sense of camaraderie, with many alumni maintaining lifelong friendships and a deep sense of pride in their unit.
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Traditions: "Turning Blue" is a significant ceremony for D31 OSUT trainees, where they receive their Infantry Blue Cord, officially recognizing them as U.S. Army Infantrymen.
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Community Impact: Soldiers and families associated with D31 OSUT contribute to the Fort Leonard Wood and Pulaski County communities through outreach, volunteer work, and local events.
