Fort Lewis, named after Meriwether Lewis of the famed Lewis and Clark expedition, is one of the largest and most modern military reservations in the United States. Consisting of 87,000 acres of prairie land cut from the glacier-flattened Nisqually Plain, it is the premier military installation in the Northwest.
Part of Forces Command, Fort Lewis is the home of I Corps and has been since 1981. It is one of 15 US power projection platforms. The Corps' primary focus is Pacific Rim. As a result, I Corps has a close, ongoing relationship with Pacific Command.
The principal Fort Lewis maneuver units are the 1st Brigade, 25th Infantry Division and the 3d Brigade, 2nd Infantry Division. It is also home to the 593d Corps Support Group, the 555th Engineer Group, the 1st MP Brigade (Provisional), the I Corps NCO Academy, Headquarters, Fourth ROTC Region, the 1st Personnel Support Group, 1st Special Forces Group (Airborne), 2d Battalion (Ranger), 75th Infantry, and Headquarters, 5th Army (West).
Fort Lewis has more than 25,000 soldiers and civilian workers. The post supports 120,000(+) retirees and more than 29,000 family members living both on and off post. Fort Lewis proper contains 86,000 acres; the Yakima Training Center covers 324,000 acres.
Mt. Rainier can be seen from just about any location on Ft. Lewis.


