The 3d Logistical Command arrived in Korea just 11 days after MacArthur's invasion and was assigned to X Corps. The command, just activated on 19 September under the Japan Logistical Command which was supporting the Eighth Army in Korea as the Far East Command requisitioning agency, assumed the task to unload, receive, store, and forward supplies for the X Corps. It established an initial supply level of 15 days and provided anti-aircraft and beach defense of the Inchon area. The concept of using a logistical command was a new one evolving from experiences during World War II. Korea marked the first use in combat of a logistical command organized under an approved table of organization. The attached corps combat service support structure was capable of providing support to units and included ordnance, quartermaster, transportation and medical units.