The 509th Personnel Services Battalion (509th PSB) was a U.S. Army unit responsible for providing vital administrative and personnel support to soldiers and commanders. Activated during World War II, the 509th PSB played a key role in managing records, awards, strength accounting, and casualty reporting for deployed units. Over the decades, the battalion supported numerous operations, including service in Europe and the Middle East, ensuring efficient personnel management in both peacetime and combat environments. The 509th PSB was eventually inactivated as part of Army modular transformation, with its functions absorbed by other personnel elements.
