The Military Railway Service (MRS) is a specialized unit within the United States Army responsible for providing railway support during military operations. Established in 1942, it offers a variety of services such as construction, maintenance, and operation of temporary or permanent rail lines to transport troops, equipment, and supplies efficiently. The MRS also provides logistical support by operating trains, maintaining tracks, and managing facilities. Its primary goal is to ensure seamless integration of railway operations with military strategy, facilitating the movement of forces effectively and swiftly.