 Fort Lewis, named after Meriwether Lewis of the Lewis and Clark expedition, was one of the largest and most modern military reservations in the United States.Consisting of 87,000 acres (350 km²) of prairie land cut from the glacier-flattened Nisqually Plain, it is the premier military installation in the northwest and is the most requested duty station in the army.Joint Base Lewis-McChord is a major Army garrison, with much of the 2nd Infantry Division in residence, along with Headquarters, 7th Infantry Division; 593rd Expeditionary Sustainment Command; and 1st Special Forces Group.