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United Nations Space Command Defense Force: Misc



Up to date as of February 08, 2010

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United Nations Space Command Defense Force

2163 - Present


United Nations Space Command


Defense Force


Defense of the UEG and its colonies


Several billion personnel


Earth and most UNSC colonies


Main MA5 Series, M6 Series, BR Series



  • Operation: TREBUCHET

Human-Covenant War

Battle Honors

Colonial Cross, many others

Notable Commanders

The United Nations Space Command Defense Force (UNSC Defense Force or UNSCDF for short) is the defensive military force of the United Nations Space Command, consisting of the Air Force, Army, Marine Corps, and Navy, which serve as a joint air, land, and space force. [1]




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. Before it was destroyed by the Covenant in 2552, Reach served as the dominant UNSCDF military base, with numerous shipyards and docking stations, barracks and training facilities, and twenty Orbital Defense Platforms. It is likely that the UNSCDF has elements stationed on other planets within the Solar System, besides Earth. Mars was one such colony that housed UNSCDF elements. [2]

Human-Covenant War

During the Human-Covenant War, the UNSCDF was called into action on Earth, and possibly Harvest as well.[3] The most notable military engagement the UNSCDF has participated in is the Battle of Earth.[4] The UNSCDF, as a planetary defense force combining all branches of the UNSC, has multiple command bases situated in various regions of Earth such as Crow's Nest in Kenya.[5]


As the main military branch of the UNSC, the UNSCDF is comprised of three autonomous of semi-autonomous branches, each with different functions and methods, but all unified under one command, and tasked with the protection of humanity, and the protection and recapture of human-occupied colonies. Control is exercised through regional CENTCOMs, which have authority over certain areas of space.

So far, the best-known members of the UNSCDF seem to be the Navy and Marine Corps, likely due to the space-oriented nature of 26th Century warfare. While also a part of the UNSCDF, the Army and Air Force are less well known.

Unified Earth Government and Colonial Administration Authority

Rank Structure

The rank structure of the UNSCDF is similar in many ways, though most enlisted ranks are highly differentiated.

Bases, Outposts, and Command Centers

A UNSCDF assembly aboard the Cairo ODP.

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[6] and possibly even the Solar System.


Ground Bases

Orbital Defense Platforms

UNSCDF Weaponry

The weapons used by the UNSCDF are manufactured to the highest standards in the UNSC. Despite this, they can rarely compete with Covenant weapons.

Major UNSCDF Events


  1. HBO Interview with Frank O'Connor and Robert McLees
  2. Halo: Uprising, Ackerson's interrogation
  3. Halo: Contact Harvest
  4. Halo 2, "Cairo Station"
  5. Halo 3, "Crow's Nest"
  6. Halo 2, Cairo Station (Level)
United Nations Space Command Defense Force
Uniformed services Army • Air Force • Marine Corps • Navy
Major sub-divisions Special Forces • Naval Intelligence • Colonial Militia

This article uses material from the "United Nations Space Command Defense Force" article on the Halo wiki at Wikia and is licensed under the Creative Commons Attribution-Share Alike License.


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