A Numbered Air Force (NAF) is a type of organization in the United States Air Force that is subordinate to a Major Command (MAJCOM) and has assigned to it operational units such as wings, squadrons, and groups. A Component Numbered Air Force (C-NAF) has the additional role as an Air Force Component Command exercising command and control over air and space forces supporting a Unified Combatant Command. Unlike MAJCOMs, which have a management role, a NAF is a tactical organization with an operational focus, and does not have the same functional staff as a MAJCOM. Numbered air forces are typically commanded by a major general or a lieutenant general.
Numerical designations for Numbered Air Forces are written in full using ordinal words (e.g., Eighth Air Force), while cardinal numerals are used in abbreviations (e.g., 8 AF). Units directly subordinate to a NAF are generally numbered 6XX (where XX is the NAF number). For example, the 618th Air and Space Operations Center (Tanker Airlift Control Center) is a unit subordinate to the Eighteenth Air Force.
Numbered air forces began as named organizations in the United States Army Air Corps before World War II. The first four NAFs were established as the Northeast, Northwest, Southeast, and Southwest Air Districts on 19 October 1940 to provide air defense for the United States. These Air Districts were redesignated as the 1st, 2nd, 3rd, and 4th Air Forces, respectively, on 26 March 1941. Over a year after the establishment of the United States Army Air Forces on June 20, 1941, the Arabic numerals were changed to the First, Second, Third, and Fourth Air Forces on 18 September 1942. Other organizations established during this period and that became Numbered air forces include the Philippine Department Air Force (became Fifth Air Force), the Panama Canal Air Force (became Sixth Air Force), the Hawaiian Air Force (became Seventh Air Force), and the Alaskan Air Force (became Eleventh Air Force). After World War II, the US Air Force continued to use both named and numbered air forces. While named air forces were used in both tactical and support roles, numbered air forces were generally employed only in tactical roles.
As part of a peacetime restructuring in March 1946, the United States Army Air Forces were reorganized into three major operating commands: the Strategic Air Command (SAC), the Tactical Air Command (TAC), and the Air Defense Command (ADC). These commands reflected the basic air combat missions that evolved during the war, and each reported directly to General Carl Spaatz, the Commanding General, Army Air Forces. Numbered air forces served as an intermediate headquarters between these commands and the operational wings and groups. Eleven of the sixteen wartime air forces remained. The Eighth and Fifteenth Air Forces were assigned to SAC; the Third, Ninth, and Twelfth Air Forces were assigned to TAC; and the First, Second, Fourth, Tenth, Eleventh, and Fourteenth Air Forces were assigned to ADC. Second Air Force would later be transferred to SAC in 1949. The numbered air forces had both operational and administrative authority, and existed as a command level between major commands and air divisions. Although variations existed, and number air forces were often reassigned, this basic arrangement persisted throughout the Cold War.
The role of numbered air forces changed in the 1990s during the Air Force reorganization initiated by Air Force Chief of Staff General Merrill McPeak. The goal of the reorganization was to "streamline, take layers out, flatten (Air Force) organizational charts, while at the same time clarifying the roles and responsibilities of essential supporting functions." Numbered air forces were reorganized into tactical echelons focused on operations, and their administrative staff functions were eliminated. This reorganization also reduced the number of major commands, and eliminated the air divisions to place numbered air forces directly in command of operational wings.
The role of numbered air forces was again changed in 2006 with the implementation of the Component Air Force (C-NAF) concept. Some numbered air forces have an additional mission as the Air Force Component Command exercising command and control over air and space forces supporting a Unified Combatant Command. C-NAFs have a second designation to identify their role. For example, First Air Force, a numbered air force assigned to Air Combat Command, is designated as Air Force Northern (AFNORTH) in its role as the air component of the United States Northern Command. Most C-NAFs have an Air and Space Operations Center (AOC) to provide command and control of air and space operations for the supported combatant commander.
The table below lists current and historical numbered air forces of the US Air Force, their C-NAF designation (if applicable), their current shield and station, and the major command (MAJCOM) to which they are currently assigned. Note that the lineage of some numbered air forces is continued by non-NAF organizations (e.g., the 15th Expeditionary Mobility Task Force continues the lineage of the Fifteenth Air Force). Boldface indicates a NAF or C-NAF that is currently active.
|Air Force||Shield||Station||Major Command||Comments|
|First Air Force (Air Forces Northern)||Tyndall Air Force Base, Florida||ACC||C-NAF supporting U.S. Northern Command and Continental NORAD Region|
|Second Air Force||Keesler Air Force Base, Mississippi||AETC||Oversees all USAF non-flying technical training|
|Third Air Force (Air Forces Europe)||Ramstein Air Base, Germany||USAFE-AFA
||C-NAF supporting U.S. European Command and U.S. Africa Command|
|Fourth Air Force||March Air Reserve Base, California||AFRC||Air Force Reserve Command NAF for all AFRC C-5, C-17, KC-135, KC-10 and C-40 units operated by Air Mobility Command and supporting U.S. Transportation Command|
|Fifth Air Force||Yokota Air Base, Japan||PACAF||Air component to United States Forces Japan|
|Sixth Air Force||Howard Air Force Base, Panama||Redesignated United States Air Forces Southern Command in 1963. Inactivated in 1976.|
|Seventh Air Force (Air Forces Korea)||Osan Air Base, Korea||PACAF||C-NAF supporting United States Forces Korea|
|Eighth Air Force (Air Forces Strategic)||Barksdale Air Force Base, Louisiana||AFGSC||C-NAF supporting U.S. Strategic Command and is responsible for all USAF bombers|
|Ninth Air Force||Shaw Air Force Base, South Carolina||ACC||C-NAF|
|Tenth Air Force||Naval Air Station Joint Reserve Base (former Carswell Air Force Base), Fort Worth, Texas||AFRC||Air Force Reserve Command NAF for all AFRC B-52 units gained by AFGSC; all AFRC E-3, F-22, F-15C/D, F-15E, F-16, A-10, HC-130, HH-60, C-145, U-28, MQ-1, MQ-9 and RQ-4 units gained by ACC, PACAF and AFSOC, and all AFRC T-6, T-1 and T-38 "Associate" flying training units in support of AETC; 10 AF also has oversight for a single AFRC space wing in support of AFSPC|
|Eleventh Air Force||Elmendorf Air Force Base, Alaska||PACAF||Air Component for Alaskan Command and Alaska NORAD Region. Administrative HQ for PACAF Wings not in 5th AF or 7th AF AORs.|
|Twelfth Air Force (Air Forces Southern)||Davis-Monthan Air Force Base, Arizona||ACC||C-NAF supporting U.S. Southern Command|
|Thirteenth Air Force (Air Forces Pacific)||Hickam Air Force Base, Hawaii||PACAF||C-NAF previously supporting USPACOM. Inactivated in 2012.|
|Fourteenth Air Force (Air Forces Strategic)||Vandenberg Air Force Base, California||AFSPC||C-NAF supporting U.S. Strategic Command and is responsible for U.S. space forces|
|Fifteenth Air Force||Travis Air Force Base||AMC||Redesignated 15th Expeditionary Mobility Task Force in 2003. Inactivated in 2012.|
|Sixteenth Air Force||Izmir Air Base||USAFE-AFA||Redesignated 16th Air Expeditionary Task Force in 2006. Inactivated in 2008.|
|Seventeenth Air Force||Ramstein Air Base, Germany||USAFE-AFA-
|Inactivated in 2012. Redesignated 17th Expeditionary Air Force, supporting U.S. Africa Command.|
|Eighteenth Air Force (Air Forces Transportation)||Scott Air Force Base, Illinois||AMC||C-NAF supporting U.S. Transportation Command|
|Nineteenth Air Force||Randolph Air Force Base, Texas||AETC||Oversees all USAF flying training, to include all undergraduate flight training and selected Formal Training Units (FTU) and Replacement Training Units (RTU)|
|Twentieth Air Force (Air Forces Strategic)||F.E. Warren Air Force Base, Wyoming||AFGSC||C-NAF supporting U.S. Strategic Command, oversees all USAF ICBMs|
|Twenty-First Air Force||McGuire Air Force Base, New Jersey||Redesignated 21st Expeditionary Mobility Task Force in 2003. Inactivated in 2012.|
|Twenty-Second Air Force||Dobbins Air Reserve Base, Georgia||AFRC||Air Force Reserve Command NAF for all AFRC C-130 and WC-130 units operated by Air Mobility Command and supporting U.S. Transportation Command|
|Twenty-Third Air Force (AFSOC)||Hurlburt Field, Florida||AFSOC||C-NAF supporting U.S. Special Operations Command. Inactivated in 2013.|
|Twenty-Fourth Air Force (Air Forces Cyber)||Lackland Air Force Base, Texas||ACC||C-NAF supporting U.S. Cyber Command.|
|Twenty-Fifth Air Force||Lackland Air Force Base, Texas||ACC||Redesignated from Air Force Intelligence, Surveillance and Reconnaissance Agency on 29 September 2014.|
Named Air Forces operate at the same level as Numbered Air Forces. General Headquarters Air Force, the first named air force of the United States Army's air arm, began operations in 1935. The GHQ Air Force became the Air Force Combat Command in 1941. Several of the numbered air forces began as named air forces.
Since World War II other named air forces have existed in both operational and support commands. Air Forces Iceland, and the Central, Eastern, Japan, and Western Air Defense Forces, have provided air defense capability. The USAF Special Operations Force controlled operational special forces. The Crew, Flying, and Technical Training Air Forces served Air Training Command both in the air and on the ground. Pacific Air Force/FEAF (Rear) controlled both operational and support forces of Far East Air Forces. Air Materiel Force, European Area, and Air Materiel Force, Pacific Area, on the other hand, served primarily as logistical support establishments.
|Air Force||Shield||Station||Major Command||Comments|
|Air Forces Iceland||Naval Air Station Keflavik, Iceland||USAFE-AFA||Established in 1952. Performed air defense of Iceland and North Atlantic. Inactivated 28 June 2006|
|Air Materiel Force, European Area||Châteauroux-Déols Air Base, France||Air Force Logistics Command||From 1954 to 1962 served as the primary USAF logistical organization in Europe|
|Air Materiel Force, Pacific Area||Tachikawa Air Base, Japan||Air Force Logistics Command||Originated during World War II in 1944, served as the primary USAF logistical organization in the Pacific. Inactivated 1962.|
|Aviation Engineer Force||Wolters Air Force Base, Texas||Continental Air Command||Controlled aviation engineer organizations of the United States Army, on duty with the United States Air Force, 1951-1956|
|Central Air Defense Force||Richards-Gebaur Air Force Base, Missouri||Air Defense Command||Controlled ADC Radar and Interceptor units in the central United States, 1951-1960.|
|Crew Training Air Force||Randolph Air Force Base, Texas||Air Training Command||Provided training for air crews, 1952-1957.|
|Eastern Air Defense Force||Stewart Air Force Base, New York||Air Defense Command||Controlled ADC Radar and Interceptor units in the eastern United States, 1949-1960.|
|Flying Training Air Force||Randolph Air Force Base, Texas||Air Training Command||Provided flying training for combat crews and flying training leading to an aeronautical rating, 1951-1958.|
|Japan Air Defense Force||Nagoya Air Base, Japan||Far East Air Force||This air defense organization was established to replace the 314th Air Division, 1952-1954|
|Pacific Air Force/FEAF (Rear)||Hickam Air Force Base, Hawaii Territory||Far East Air Force||Established to control Air Force operations in the Pacific and Far East during the move of the Far East Air Forces (FEAF) from Japan to Hawaii, 1954-1957|
|Technical Training Air Force||Randolph Air Force Base, Texas||Air Training Command||Provided officer candidate training, indoctrination (basic) training, and technical training to Air Force personnel, 1951-1958.|
|USAF Special Operations Force||Eglin Air Force Base, Florida||Tactical Air Command||When the USAF Special Air Warfare Center became too large and cumbersome for center status, it was elevated to a named air force, 1962-1974.|
|Western Air Defense Force||Hamilton Air Force Base, California||Air Defense Command||Controlled ADC Radar and Interceptor units in the western United States, 1951-1960.|
|United States Air Forces Central Command||Shaw Air Force Base, South Carolina||Air Combat Command||Established in 1983 as United States Central Command Air Forces (USCENTAF); renamed United States Air Forces Central Command (USAFCENT) in 2009. Air component of United States Central Command, a regional unified command. Responsible for air operations (either unilaterally or in concert with coalition partners) and developing contingency plans in support of national objectives for USCENTCOM's 20-nation area of responsibility in Southwest Asia.|