United Nations Space Command Defense Force

The United Nations Space Command Defense Force (UNSC Defense Force or UNSCDF) is the defensive military force of the United Nations Space Command, consisting of the UNSC Army and the UNSC Air Force, which serve as aerial and ground elements.

Interplanetary War
The UNSC Defense Force was likely created during the Interplanetary War, once the structure of the UNSC was formed. As a result of the UNSC's complex command structure, the UNSCDF is assigned to serve a ground and aerial defense force, its headquarters likely being Earth since Reach is a naval headquarters. It is also possible that the UNSCDF has elements stationed on other planets within the Solar System. Mars is also likely to be one of the colonies that houses UNSCDF elements.

Human-Covenant War
During the Human-Covenant War, the UNSCDF was called into action on Earth, and possibly Harvest as well. The most notable military engagement the UNSCDF has participated in is the Second Battle of Earth. The UNSCDF as a planetary defense force combining both the UNSC Air Force and the UNSC Army, has multiple command bases situated in various regions of Earth such as Crow's Nest in Kenya.

Organization
The UNSCDF follows the same organizational structure as the UNSC does, although the UNSC Army and the UNSC Air Force are solely controlled by the UNSCDF and not the UNSC.


 * Unified Earth Government
 * United Nations Space Command
 * Central Command (CENTCOM)
 * High Command (HIGHCOM)
 * UNSC Security Committee
 * UNSC Security Council
 * United Nations Space Command Defense Force
 * UNSC Army
 * UNSC Air Force

Rank Structure
The rank structure within the UNSC Defense Force is divided into the UNSC Army and the UNSC Air Force.

UNSC Army

 * See: UNSC Army

UNSC Air Force

 * See: UNSC Air Force

Bases, Outposts, and Command Centers
Unlike the UNSC, the UNSCDF probably has a larger network of operations bases and command centers on Earth. Aside from ground centers, the UNSCDF also operates the Orbital Defense Platforms about Earth and possibly even the Solar System.

Ground Bases

 * Crow's Nest, Africa, Republic of Kenya
 * Outpost C9, Africa, Republic of Kenya
 * HIGHCOM Facility Bravo-6, Australia

Orbital Defense Platforms

 * Cairo Station
 * Malta Station
 * Athens Station
 * Nassau Station (non-canon)

UNSCDF Weaponry
Weapons employed by the UNSC Defense Force are currently unknown apart from the M6J Carbine used by the UNSC Army. It is likely that both the Army's, and the Air Force's weapons resemble the UNSC Marine Corps, and the UNSC Navy's armament respectively.

Major UNSCDF Events

 * Interplanetary War - 2160-2200
 * Jovian Moons Campaign
 * Rain Forest Wars
 * Martian Campaign
 * Inner Colony Wars - Unknown, probably 25th century
 * Human-Covenant War - 2525-2553
 * Second Battle of Earth
 * Battle of Mare Erythraeum