100th Missile Defense Brigade

A test launch of a Ground-based Interceptor, Vandenberg Air Force Base, Calif.

The 100th Missile Defense Brigade (Ground-based Midcourse Defense) is a multi-component brigade consisting of active-component Army and Army National Guard Soldiers in Colorado, California and Alaska who are tasked with the mission of defending the homeland from limited intercontinental ballistic missile attacks.

Utilizing a worldwide array of space, sea and land-based sensors, these missile defense crews are able to detect missile launches, track their trajectories and, if determined to be a threat to the homeland, launch ground-based interceptors located at Fort Greely, Alaska, and Vandenberg Air Force Base, California, to neutralize that threat.

Missile defense crews from the Headquarters and Headquarters Battery, 100th Missile Defense Brigade (GMD) operate the fire control node, the Missile Defense Element, at Schriever Air Base, Colorado, monitoring the skies 24/7/365. Alaska Army National Guard missile defense crews from HHB, 49th Missile Defense Battalion (GMD) perform their operational mission at the Fire Direction Center at Fort Greely while Alpha Company, 49th Military Police provide security for Fort Greely’s Missile Defense Complex. Detachment 1, 100th Missile Defense Brigade, is part of the California Army National Guard and located at Vandenberg Air Force Base. This small detachment is responsible for monitoring the launch facilities located there.

The 100th Missile Defense Brigade’s 300 Soldiers are tasked with defending 300 million Americans from the threat of ballistic missile attack. We are known simply as “The 300.”

The brigade headquarters is located in Colorado Springs, Colorado. For more information you may contact the brigade’s Public Affairs officer at 720-250-3702.

100th Missile Defense Brigade
COL Tim C. Lawson
CSM Terry L. Alflen


100th Missile Defense Brigade (GMD) Articles





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100th MDB Public Affairs

Mission, Vision & Goal

USASMDC/ARSTRAT develops and provides current and future global space, missile defense, and high altitude forces and capabilities to the Army, the joint force, and our interagency, intergovernmental, and multinational Allies and partners to enable mission command, enhance
deterrence and detection of strategic attacks, and protect U.S. vital interests in all domains.

A diverse, complex, and global command that provides critical capabilities to our Army, U.S. Strategic Command, combatant commands/Army Service Component Commands; in sync with JFCC-IMD... Read More...

Command Goal
To provide dominant space and missile defense capabilities for the Army and to plan for and integrate those capabilities in support of U.S. Strategic Command (USSTRATCOM) and Geographic Combatant Commanders (GCC) missions.