The 4th Infantry Division is a modular division of the U.S. Army based at Fort Carson. It is composed of three organic brigade combat teams (i.e., Stryker, infantry, and armored), and one Combat Aviation Brigade. The 4th Infantry Division's official nickname, "Ivy", is a play on words of the Roman numeral IV or 4. Ivy leaves symbolize tenacity and fidelity, which is the basis of the division's motto: "Steadfast and Loyal." The second nickname, "Iron Horse," has been adopted to underscore the speed and power of the division and its soldiers.

CYS Services is committed to serving the unique needs of Mountain Post families through a variety of programs designed for children ages six-weeks through 18 years. All services are based on the growth and development of your child, and meet both US Army and national standards. The seamless delivery system ensures that the same caring philosophy is followed by the dedicated staff in every program and service they offer.​

The 50th Space Wing, a component of Air Force Space Command, is located at Schriever Air Force Base. It is responsible for the operations and support of more than 150 Department of Defense satellites. The 50th SW is one of the world’s best space command and control teams that delivers combat power from space for America and its allies.

The 21st Space Wing headquarters is located at Peterson Air Force Base. The 21st SW is the Air Force's most geographically-dispersed wing, and the fifth largest wing in the Air Force by number of units. It literally covers the world with its operations. As Air Force Space Command's largest, most weapon-system diverse, and geographically separated operations group, it commands and controls missile warning and space control units around the globe. The group provides real-time missile warning, attack assessment, and space control to the President, Secretary of Defense, JCS, combatant commands and foreign allies. Through its commander, the group develops future combat counterspace capabilities in support of theater campaigns.

The 21st Force Support Squadron is located at Peterson Air Force Base. It's mission is to deliver and sustain global mission support to dominate the high ground for the wing and its customers, while providing and employing global capabilities to ensure space superiority and to defend our nation and allies. Its website communicates programs, facilities and services that enhance force readiness. Staff strives to provide the best leisure and recreational services ranging from fitness to outdoor adventure and from golf to child development. They manage lodging facilities, provide mortuary affairs services and honor guard teams, offer family readiness services, and address civilian and military needs.

The North American Aerospace Defense Command is a United States and Canada bi-national organization charged with the missions of aerospace warning and aerospace control for North America. Aerospace warning includes the detection, validation, and warning of attack against North America whether by aircraft, missiles, or space vehicles, through mutual support arrangements with other commands. The Cheyenne Mountain Complex is located at Cheyenne Mountain Air Force Station, a short distance from NORAD and USNORTHCOM headquarters at Peterson Air Force Base in Colorado Springs. Cheyenne Mountain Air Force Station falls under Air Force Space Command and hosts the activities of several tenant units.