The 24th Tactical Air Support Squadron (24 TASS) was a
ground attack
In military tactics, close air support (CAS) is defined as air action such as air strikes by fixed or rotary-winged aircraft against hostile targets near friendly forces and require detailed integration of each air mission with fire and moveme ...
squadron of the
United States Air Force
The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army S ...
. It was last active at
Nellis Air Force Base
Nellis Air Force Base ("Nellis" colloq.) is a United States Air Force installation in southern Nevada. Nellis hosts air combat exercises such as Exercise Red Flag and close air support exercises such as Green Flag-West flown in " Military ...
in Nevada, prior to being inactivated during December 2020.
Proving ground unit
The first predecessor of the 24 TASS was the 24th Bombardment Squadron (Light) which was activated in late 1939 as a test unit for light bombardment aircraft at
Maxwell Field
Maxwell Air Force Base , officially known as Maxwell-Gunter Air Force Base, is a United States Air Force (USAF) installation under the Air Education and Training Command (AETC). The installation is located in Montgomery, Alabama, United States. O ...
, Alabama. The squadron was disbanded in the spring of 1942 in a reorganization of
United States Army Air Forces
The United States Army Air Forces (USAAF or AAF) was the major land-based aerial warfare service component of the United States Army and ''de facto'' aerial warfare service branch of the United States during and immediately after World War II ...
operational testing units in the spring of 1942.
[Maurer, ''Combat Squadrons'', p. 125]
Mapping in the Pacific
The second predecessor of the squadron was activated in the fall of 1942 as the 24th Photographic Mapping Squadron. After training in the United States under
Second Air Force
The Second Air Force (2 AF; ''2d Air Force'' in 1942) is a USAF numbered air force responsible for conducting basic military and technical training for Air Force enlisted members and non-flying officers. In World War II the CONUS unit defended ...
, the squadron deployed to the
China Burma India Theater
China Burma India Theater (CBI) was the United States military designation during World War II for the China and Southeast Asian or India–Burma (IBT) theaters. Operational command of Allied forces (including U.S. forces) in the CBI was off ...
, where it performed combat mapping. mostly with
North American B-25 Mitchell
The North American B-25 Mitchell is an American medium bomber that was introduced in 1941 and named in honor of Major General William "Billy" Mitchell, a pioneer of U.S. military aviation. Used by many Allied air forces, the B-25 served in ...
s and
Consolidated B-24 Liberator
The Consolidated B-24 Liberator is an American heavy bomber, designed by Consolidated Aircraft of San Diego, California. It was known within the company as the Model 32, and some initial production aircraft were laid down as export models ...
s equipped with vertical and oblique Mapping cameras until moving to
Clark Field
Clark is an English language surname, ultimately derived from the Latin with historical links to England, Scotland, and Ireland ''clericus'' meaning "scribe", "secretary" or a scholar within a religious order, referring to someone who was educate ...
in the Philippines, where it was inactivated in 1946. In Asia, the squadron deployed detachments to a number of locations, although the headquarters remained in
Guskhara Airfield
Guskhara Airfield is a former wartime United States Army Air Forces airfield in India used during the Burma Campaign 1944-1945. It is now abandoned.
History
Guskhara was a photo-recon base for the Tenth Air Force during 1944–1945. Its primary t ...
, India.
[
]
Air Force reserve
The squadron was activated again in the reserves in 1947 as the 24th Reconnaissance Squadron, but apparently was not equipped before inactivating when Continental Air Command
Continental Air Command (ConAC) (1948–1968) was a Major Command of the United States Air Force (USAF) responsible primarily for administering the Air National Guard and Air Force Reserve.
During the Korean War, ConAC provided the necessary au ...
reorganized under the Wing Base Organization plan in 1949.
Strategic Air Command
The squadron was activated in the regular Air Force in 1951 as the 24th Strategic Reconnaissance Squadron at Lake Charles Air Force Base
Chennault International Airport ( IATA: CWF, ICAO: KCWF, FAA LID: CWF) is a center of aerospace activity based in Lake Charles, Louisiana, serves the needs of civilian and military aircraft from around the world with world-class infrastructur ...
, Louisiana and equipped with Boeing RB-29 Superfortress
The Boeing B-29 Superfortress is a WWII era long range, strategic heavy bomber that was produced in many experimental and production models.
XB-29
: ''Section source: Baugher''
The XB-29, Boeing Model 345, was the first accepted prototype or e ...
es. When its parent 68th Strategic Reconnaissance Wing converted to a bombardment
A bombardment is an attack by artillery fire or by dropping bombs from aircraft on fortifications, combatants, or towns and buildings.
Prior to World War I, the term was only applied to the bombardment of defenseless or undefended object ...
mission in 1952, the squadron became the 24th Bombardment Squadron, but was inactivated in 1953,[ and its personnel and equipment were transferred to the 656th Bombardment Squadron, which was simultaneously activated.][SAC found itself with two 24th Bombardment Squadrons when the 24th Strategic Reconnaissance Squadron became a bombardment unit. The 24th Bombardment Squadron, Medium, assigned to the 68th Wing, and the ]24th Bombardment Squadron
Fourth or the fourth may refer to:
* the ordinal form of the number 4
* ''Fourth'' (album), by Soft Machine, 1971
* Fourth (angle), an ancient astronomical subdivision
* Fourth (music), a musical interval
* ''The Fourth'' (1972 film), a Sov ...
, Heavy at Walker Air Force Base
Walker Air Force Base is a closed United States Air Force base located three miles (5 km) south of the central business district of Roswell, New Mexico. It was opened in 1941 as an Army Air Corps flying school and was active during World ...
, assigned to the 6th Bombardment Wing
The United States Air Force's 6th Air Refueling Wing is the host wing for MacDill Air Force Base, Florida. It is part of Air Mobility Command's (AMC) Eighteenth Air Force. The wing's 6th Operations Group is a successor organization of the 3d ...
. SAC elected to replace the squadron at Chennault. Maurer, ''Combat Squadrons'', pp. 125–127.
Helicopter operations
The 24th Helicopter Squadron was activated in 1956 at Sewart Air Force Base
Sewart Air Force Base (1941–1971) is a former United States Air Force base located in Smyrna, about 25 miles southeast of Nashville, Tennessee. During World War II, it was known as Smyrna Army Airfield.
History
World War II
The War Depar ...
, Tennessee. After several months of training the squadron moved to Tachikawa Air Base
is an airfield in the city of Tachikawa, the western part of Tokyo, Japan. Currently under the administration of the Ministry of Defense, it has also served as the civil aviation with Japan's first scheduled air service.
History
Origins
Ta ...
, Japan, where it served until 1960. The transfer was made on an aircraft carrier of the United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
. The unit's mission was to maintain helicopter logistics
Logistics is generally the detailed organization and implementation of a complex operation. In a general business sense, logistics manages the flow of goods between the point of origin and the point of consumption to meet the requirements of ...
airlift capability, to perform air land supply operations, scheduled and special airlift
An airlift is the organized delivery of supplies or personnel primarily via military transport aircraft.
Airlifting consists of two distinct types: strategic and tactical. Typically, strategic airlifting involves moving material long distan ...
operations, and conduct training. Detachment 2 of the squadron was attached to the 41st Air Division
The 41st Air Division is an inactive United States Air Force unit. Its last assignment was with Fifth Air Force at Yokota Air Base, Japan. It was inactivated on 15 January 1968.
History
"The 41st Air Division was organized, administered, equipp ...
to provide logistical support to the division's remote radar sites.[Abstract, History 41st Air Div Jul–Dec 1956]
(retrieved 10 July 2013) In 1958 and 1959 the squadron returned to Burma when it participated in Operation South Bound, which provided assistance to the Burmese Air Force in combatting local insurrectionists.
Operations in Central and South America
The squadron was redesignated the 24th Special Operations Squadron and activated in Panama in 1969. In 1985, the squadron was consolidated with its two predecessor units. The consolidated squadron became the 24th Tactical Air Support Squadron in 1987, and was inactivated in the spring of 1991.
Close air support training
The 24 Tactical Air Support Squadron was activated on 2 March 2018 at Nellis Air Force Base
Nellis Air Force Base ("Nellis" colloq.) is a United States Air Force installation in southern Nevada. Nellis hosts air combat exercises such as Exercise Red Flag and close air support exercises such as Green Flag-West flown in " Military ...
, Nevada. It was the USAF's Forward Air Controller – Airborne schoolhouse for the Lockheed Martin F-16 Fighting Falcon as well as supporting the joint terminal attack controller qualification course and Weapons School.
The squadron was inactivated during a ceremony at Nellis on 23 December 2020.
Lineage
; 24th Bombardment Squadron
* Constituted as the 24th Attack-Bombardment Squadron on 1 August 1939
: Redesignated 24th Bombardment Squadron (Light) on 28 September 1939
: Activated on 1 December 1939
: Disbanded on 1 May 1942
: Reconstituted on 19 September 1985 and consolidated with 24th Bombardment Squadron, Medium and 24th Composite Squadron as 24th Composite Squadron[
; 24th Strategic Reconnaissance Squadron
* Constituted as the 24th Photographic Mapping Squadron on 14 July 1942
: Activated on 2 September 1942
: Redesignated as 24th Photographic Squadron, Heavy on 6 February 1943
: Redesignated as 24th Combat Mapping Squadron on 11 August 1943
: Inactivated on 15 June 1946
* Redesignated 24th Reconnaissance Squadron, Very Long Range, Photographic, Radar Counter-Measures on 13 May 1947
: Activated in the reserve on 12 July 1947
: Inactivated on 27 June 1949
* Redesignated 24th Strategic Reconnaissance Squadron, Medium, Photographic on 4 October 1951
: Activated on 10 October 1951
: Redesignated 24th Bombardment Squadron, Medium on 16 June 1952
: Redesignated 24th Strategic Reconnaissance Squadron, Medium and inactivated on 16 January 1953
* Consolidated on 19 September 1985 with 24th Bombardment Squadron, (Light) and 24th Composite Squadron as 24th Composite Squadron][
; 24th Tactical Air Support Squadron
* Constituted as the 24th Helicopter Squadron on 24 February 1956
: Activated on 9 July 1956
: Inactivated on 8 March 1960
* Redesignated 24th Special Operations Squadron on 6 March 1969
: Activated on 18 March 1969
: Redesignated 24th Composite Squadron on 15 November 1973
: Inactivated on 1 July 1975
: ]
Activated on 1 January 1976
* Consolidated with 24th Bombardment Squadron, Medium and 24th Bombardment Squadron, Medium on 19 September 1985
: Redesignated 24th Tactical Air Support Squadron on 1 January 1987
: Inactivated on 31 March 1991
* Activated on 2 March 2018[
: Inactivated on 23 December 2020
]
Assignments
* 23d Composite Group
3-D, 3D, or 3d may refer to:
Science, technology, and mathematics Relating to three-dimensionality
* Three-dimensional space
** 3D computer graphics, computer graphics that use a three-dimensional representation of geometric data
** 3D film, a ...
(later Air Corps Proving Ground Detachment, Air Forces Proving Ground Group): 1 December 1939 – 1 May 1942
* 5th Photographic Group
The 26th Information Operations Wing is an inactive United States Air Force unit. Its last assignment was with United States Air Forces in Europe at Ramstein Air Base, Germany, where it was inactivated on 5 July 2006.
The wing was first establ ...
(later 5th Photographic Reconnaissance and Mapping Group, 5th Photographic Reconnaissance Group), 2 September 1942
* Third Air Force
The Third Air Force (Air Forces Europe) (3 AF) is a numbered air force of the United States Air Forces in Europe - Air Forces Africa (USAFE-AFAFRICA). Its headquarters is Ramstein Air Base, Germany. It is responsible for all U.S. air forces in E ...
, 9 October 1943
* III Reconnaissance Command
The III Reconnaissance Command is a disbanded United States Army Air Forces unit. Its last assignment was with Third Air Force stationed at Rapid City Army Air Base, South Dakota, where it was inactivated on 8 April 1946. After transferring ...
, 12 October 1943
* Army Air Forces, India-Burma Sector
An army (from Old French ''armee'', itself derived from the Latin verb ''armāre'', meaning "to arm", and related to the Latin noun ''arma'', meaning "arms" or "weapons"), ground force or land force is a fighting force that fights primarily on ...
, 26 December 1943 (attached to 5306th Photographic and Reconnaissance Group (Provisional), 26 December 1943 – 17 January 1944, Tenth Air Force
The Tenth Air Force (10 AF) is a unit of the U.S. Air Force, specifically a numbered air force of the Air Force Reserve Command (AFRC). 10 AF is headquartered at Naval Air Station Fort Worth Joint Reserve Base/Carswell Field (formerly Carswell ...
)
* Tenth Air Force, 7 March 1944
* 8th Photographic Reconnaissance Group
8 (eight) is the natural number following 7 and preceding 9.
In mathematics
8 is:
* a composite number, its proper divisors being , , and . It is twice 4 or four times 2.
* a power of two, being 2 (two cubed), and is the first number of t ...
(later 8th Reconnaissance Group), 25 April 1944
* Army Air Forces, India-Burma Theater, 20 September 1945
* Thirteenth Air Force
The Thirteenth Air Force (Air Forces Pacific) (13 AF) was a numbered air force of the United States Air Force Pacific Air Forces (PACAF). It was last headquartered at Hickam Air Force Base on the island of Oahu, Hawaii. 13 AF has never been stat ...
, 28 January 1946
* 313th Bombardment Wing, 1 April 1946 − 15 June 1946
* 68th Reconnaissance Group, 12 July 1947 − 27 June 1949
* 68th Strategic Reconnaissance Group, 10 October 1951 (attached to 68th Strategic Reconnaissance Wing)
* 68th Bombardment Wing, 16 June 1952 − 16 January 1953
* Eighteenth Air Force
Eighteenth Air Force (Air Forces Transportation) (18 AF) is the only Numbered Air Force (NAF) in Air Mobility Command (AMC) and one of the largest NAFs in the United States Air Force. 18 AF was activated on 28 March 1951, inactivated on 1 Janu ...
, 9 July 1956
* 315th Air Division
The 315th Air Division is an inactive United States Air Force formation. Originally designated the 315th Bombardment Wing, it was activated in July 1944 at Peterson Field, Colorado as a command and control organization for four very heavy B-29 Su ...
: 13 October 1956 − 8 March 1960
* 24th Special Operations Wing
The 24th Special Operations Wing (Air Force Special Tactics) is a United States Air Force active-duty wing that was activated on 12 June 2012. Its headquarters is at Hurlburt Field, Florida and it has component groups located in North Carolina, G ...
(later 24th Special Operations Group, 24th Composite Group), 18 March 1969 − 1 July 1975
* 24th Composite Wing, 1 January 1976
* USAF Southern Air Division
Air Forces Panama is an inactive United States Air Force (USAF) headquarters. It was assigned to Tactical Air Command, most recently to Twelfth Air Force. Its headquarters were located at Albrook Air Force Station and Howard Air Force Base in th ...
, 31 January 1987
* 24th Composite Wing, 1 January 1989
* Air Forces Panama, 15 February − 31 March 1991
* 57th Operations Group
The 57th Operations Group (57 OG) is the operational component of the 57th Wing, assigned to the United States Air Force's Air Combat Command. The group is stationed at Nellis Air Force Base, Nevada.
The Group provides direct oversight of the Nel ...
, 2 March 2018 – 23 December 2020
Stations
* Maxwell Field, Alabama, 1 December 1939
* Orlando Army Air Base
Orlando Executive Airport is a public airport three miles (6 km) east of downtown Orlando, in Orange County, Florida. It is owned and operated by the Greater Orlando Aviation Authority (GOAA) and serves general aviation.
Overview
Orlan ...
, Florida, 2 September 1940
* Eglin Field Eglin may refer to:
* Eglin (surname)
* Eglin Air Force Base, a United States Air Force base located southwest of Valparaiso, Florida
* Federal Prison Camp, Eglin, a Federal Bureau of Prisons minimum security prison on the grounds of Eglin Air Fo ...
, Florida 29 June 1941 − 1 May 1942
* Peterson Field
Peterson Space Force Base, previously Peterson Air Force Base, Peterson Field, and Army Air Base, Colorado Springs, is a U.S. Space Force Base that shares an airfield with the adjacent Colorado Springs Municipal Airport and is home to the ...
, Colorado, 2 September 1942
* Will Rogers Field
Will may refer to:
Common meanings
* Will and testament, instructions for the disposition of one's property after death
* Will (philosophy), or willpower
* Will (sociology)
* Will, volition (psychology)
* Will, a modal verb - see Shall and wi ...
, Oklahoma, 13 October 1943
* Camp Anza
Camp Anza was a United States Army installation, in what is now Riverside, California, during World War II. Construction began on July 3, 1942, and was completed on February 15, 1943. The camp was named after Juan Bautista de Anza, an early explor ...
, California, 8 November 1943 − 18 November 1943
* Guskhara, India, 5 January 1944
* Calcutta
Kolkata (, or , ; also known as Calcutta , the official name until 2001) is the capital of the Indian state of West Bengal, on the eastern bank of the Hooghly River west of the border with Bangladesh. It is the primary business, comm ...
, India, 23 December 1945
* Kanchrapara
Kanchrapara is a city and a municipality of North 24 Parganas district in the Indian state of West Bengal.It is also known as the mini Kolkata of West Bengal.
History
From early historical period, geographically, this area had been full of swa ...
, India, 17 December 1945 − 17 January 1946 (air echelon moved to Clark Field on 18 December)
* Clark Field, Luzon, Philippines, 29 January 1946 − 15 June 1946
* Hamilton Field (later Hamilton Air Force Base), California, 12 July 1947 − 27 June 1949
* Lake Charles Air Force Base, Louisiana, 10 October 1951 − 16 January 1953
* Sewart Air Force Base
Sewart Air Force Base (1941–1971) is a former United States Air Force base located in Smyrna, about 25 miles southeast of Nashville, Tennessee. During World War II, it was known as Smyrna Army Airfield.
History
World War II
The War Depar ...
, Tennessee, 9 July – 25 September 1956
* Itami Air Base
270px, Gogadzuka Kofun
270px, Aerial view of Itami city center
270px, Konoike inari shihi
270px, Arioka Castle ruins
) is a city located in Hyōgo Prefecture, Japan. , the city had an estimated population of 197,215 in 83580 households and a ...
, Japan, 10 October 1956
* Showa Air Station, Japan, 1 July 1957 − 8 March 1960
* Howard Air Force Base
Howard Air Force Base is a former United States Air Force base located in Panama. It discontinued military operations on 1 November 1999 as a result of the Torrijos-Carter Treaties, which specified that US military facilities in the former Pa ...
, 18 March 1969 − 1 July 1975
* Howard Air Force Base (later Howard Air Base), 1 January 1976 − 31 March 1991
* Nellis Air Force Base, 2 March 2018 – 23 December 2020[
]
Detachment Locations during World War II
* Hsinching Airfield, China, 17 March 1944 – 9 April 1944, 27 April 1944 − c. 1 July 1944, October–November 1944
* Jorhat Airfield, India, 9 April 1944 – 22 April 1944
* Liuchow Airfield, China, 10 July 1944 – 22 September 1944
* Chanyi Airfield, China, 22 September 1944 – 17 February 1945
* Pengshan Airfield, China, November 1944
* Tulihal and Cox's Bazar, India, February 1945 − c. April 1945
Aircraft
* Curtiss A-12 Shrike
The Curtiss A-12 Shrike was the United States Army Air Corps' second monoplane ground-attack aircraft, and its main attack aircraft through most of the 1930s. It was based on the A-8, but had a radial engine instead of the A-8's inline, water- ...
:1940–1942
* Curtiss A-18 Shrike
The Curtiss A-18 ''Model 76A Shrike II'' was a 1930s United States twin-engine ground-attack aircraft. It was the production test version of that company's A-14 Shrike.
Design and development
In the years leading up to World War II, the Unit ...
: 1940–1942
* Douglas A-20 Havoc
The Douglas A-20 Havoc (company designation DB-7) is an American medium bomber, attack aircraft, night intruder, night fighter, and reconnaissance aircraft of World War II.
Designed to meet an Army Air Corps requirement for a bomber, it was ...
: 1940–1942
* Stearman XA-21
The Stearman XA-21 (Model X-100) was a competitor in a United States Army Air Corps competition for a twin-engined attack aircraft which (after redesigns) led to the Douglas A-20 Havoc, Martin A-22 Maryland and North American B-25 Mitchell.
De ...
: 1940–1942
* Martin B-10
The Martin B-10 was the first all-metal monoplane bomber to be regularly used by the United States Army Air Corps, entering service in June 1934.Jackson 2003, p. 246. It was also the first mass-produced bomber whose performance was superior to ...
: 1940–1942
* Martin B-12: 1940–1942
* Douglas B-18 Bolo
The Douglas B-18 Bolo is an American heavy bomber which served with the United States Army Air Corps and the Royal Canadian Air Force (as the Digby) during the late 1930s and early 1940s. The Bolo was developed by the Douglas Aircraft Company ...
:1940–1942
* Douglas B-23 Dragon
The Douglas B-23 Dragon is an American twin-engined bomber developed by the Douglas Aircraft Company as a successor to (and a refinement of) the B-18 Bolo.
Design and development
Douglas proposed a number of modifications designed to improve th ...
: 1940–1942
* Consolidated B-24 Liberator
The Consolidated B-24 Liberator is an American heavy bomber, designed by Consolidated Aircraft of San Diego, California. It was known within the company as the Model 32, and some initial production aircraft were laid down as export models ...
(F-7): 1943, 1944–1946
* North American B-25 Mitchell
The North American B-25 Mitchell is an American medium bomber that was introduced in 1941 and named in honor of Major General William "Billy" Mitchell, a pioneer of U.S. military aviation. Used by many Allied air forces, the B-25 served in ...
(F-9): 1940–1942, 1944
* Boeing RB-29 Superfortress (F-13): 1946; 1952–1953
* Lockheed C-36 Electra
The Lockheed Model 10 Electra is an American twin-engined, all-metal monoplane airliner developed by the Lockheed Aircraft Corporation in the 1930s to compete with the Boeing 247 and Douglas DC-2. The type gained considerable fame as one was fl ...
: 1940–1942
* Lockheed C-40 Electra
The Lockheed Model 12 Electra Junior, more commonly known as the Lockheed 12 or L-12, is an eight-seat, six-passenger all-metal twin-engine transport aircraft of the late 1930s designed for use by small airlines, companies, and wealthy private ind ...
: 1940–1942
* Bell YFM-1 Airacuda
The Bell YFM-1 Airacuda was an American heavy fighter aircraft, developed by the Bell Aircraft Corporation during the mid-1930s. It was the first military aircraft produced by Bell. Originally designated the Bell Model 1, the Airacuda first f ...
: 1940–1942
* Consolidated PB-2
The Consolidated P-30 (PB-2) was a 1930s United States two-seat fighter aircraft. An attack version called the A-11 was also built, along with two Y1P-25 prototypes and YP-27, Y1P-28, and XP-33 proposals. The P-30 is significant for being the fi ...
: 1940–1942
* Stearman PT-17 Kaydet
The Stearman (Boeing) Model 75 is a biplane formerly used as a military trainer aircraft, of which at least 10,626 were built in the United States during the 1930s and 1940s. Stearman Aircraft became a subsidiary of Boeing in 1934. Widely kn ...
: 1940–1942
* Douglas SBD-1 Dauntless: 1940–1942
* Piasecki H-21
The Piasecki H-21 Workhorse/Shawnee is an American helicopter, the fourth of a line of tandem rotor helicopters designed and built by Piasecki Helicopter (later Boeing Vertol). Commonly called "the flying banana", it was a multi-mission helicop ...
: 1956–unknown[
* General Dynamics F-16 Fighting Falcon: 2018–2020
]
Awards and Campaigns
References
Notes
; Explanatory notes
; Citations
Bibliography
*
*
*
AF Pamphlet 900-2, Unit Decorations, Awards and Campaign Participation Credits
Department of the Air Force, Washington, DC, 15 June 1971
AF Pamphlet 900-2, Unit Decorations, Awards and Campaign Participation Credits, Vol II
Department of the Air Force, Washington, DC, 30 September 1976, p.
External links
Retrieved 10 July 2013.
* ttp://www.cbi-history.com/part_vi_24th_combat_map_sq.html CBI Unit Histories – 24th Combat Mapping SquadronRetrieved 10 July 2013.
"A Tale of Two Airplanes"
by Kingdon R. "King" Hawes, Lt Col, USAF (Ret.)
{{USAAF 10th Air Force World War II
024
4 (four) is a number, numeral and digit. It is the natural number following 3 and preceding 5. It is the smallest semiprime and composite number, and is considered unlucky in many East Asian cultures.
In mathematics
Four is the smallest c ...
Military units and formations disestablished in the 2020s