An Army base of America is a permanent U.S. Army installation — usually called a fort or post — that houses soldiers, training ranges, and family support facilities.

The largest by supported population is Fort Bragg in North Carolina, while White Sands Missile Range in New Mexico is the largest by land area. In March 2025, Fort Liberty was officially renamed Fort Bragg, now honoring a World War II soldier rather than a Confederate general.

A U.S. Army base is a permanent military installation operated by the Army to house soldiers, conduct training, and provide logistical and family support. These sites are commonly called forts or posts and are managed locally through a garrison command.

The term differs from a joint base, which merges installations from two or more service branches. The Army uses several overlapping terms.

A "fort" is the traditional name for a major manned post, while "installation" is the broader administrative label that also covers depots, arsenals, and proving grounds.

The developed core of a base — where housing, offices, and motor pools sit — is the cantonment area, while training ranges and impact zones usually surround it.

Key Insight: A joint base such as Joint Base Lewis-McChord combines previously separate Army and Air Force installations under a single command, so not every "Army base" is Army-only.

A garrison command runs the day-to-day operations of a post: utilities, housing, security at the gates, and family programs. Operational fighting units, such as divisions and brigades, are tenants on the installation rather than its managers.

This split between garrison support and operational units is why a single base can host tens of thousands of soldiers across many different commands. The U.S.

Army operates dozens of major active-duty installations across the continental United States, plus additional sites in Alaska and Hawaii and a network of posts overseas.