Fort Apache is, metaphorically

Metaphor

A metaphor is a literary figure of speech that uses an image, story or tangible thing to represent a less tangible thing or some intangible quality or idea; e.g., "Her eyes were glistening jewels." Metaphor may also be used for any rhetorical figures of speech that achieve their effects via...

, a building, complex, or defensive site providing shelter from hostile action in the form of crime (in police drama) or native insurrection or enemy attack (in John Ford

John Ford

John Ford was an American film director. He was famous for both his westerns such as Stagecoach, The Searchers, and The Man Who Shot Liberty Valance, and adaptations of such classic 20th-century American novels as The Grapes of Wrath...

 movies).

The metaphor is now used by military and police to refer to a post which is beset/besieged. Recent examples may be found in Iraq

Iraq

Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

 and Afghanistan

Afghanistan

Afghanistan , officially the Islamic Republic of Afghanistan, is a landlocked country located in the centre of Asia, forming South Asia, Central Asia and the Middle East. With a population of about 29 million, it has an area of , making it the 42nd most populous and 41st largest nation in the world...

.
Another example is "Fort Apache, the Bronx", a name used in the past for the NYPD's

New York City Police Department

The New York City Police Department , established in 1845, is currently the largest municipal police force in the United States, with primary responsibilities in law enforcement and investigation within the five boroughs of New York City...

 41st Precinct Station House at 1086 Simpson Street, the Bronx

The Bronx

The Bronx is the northernmost of the five boroughs of New York City. It is also known as Bronx County, the last of the 62 counties of New York State to be incorporated...

 and the 1981 movie

Fort Apache, The Bronx

Fort Apache, The Bronx is a 1981 crime drama film made by Producers Circle, Time-Life Television Productions Inc., and distributed by Twentieth Century-Fox Film Corporation. It was directed by Daniel Petrie and produced by Martin Richards, Thomas Fiorello, with David Susskind as executive producer...

 named for it.

See also

• Fort Apache (1948 John Ford film)
  Fort Apache (film)
  Fort Apache is a 1948 Western film directed by John Ford and starring John Wayne and Henry Fonda. The film was the first of the director's "cavalry trilogy" and was followed by She Wore a Yellow Ribbon and Rio Grande , both also starring Wayne...
  
  
• Fort Apache, The Bronx (1981 film)
  Fort Apache, The Bronx
  Fort Apache, The Bronx is a 1981 crime drama film made by Producers Circle, Time-Life Television Productions Inc., and distributed by Twentieth Century-Fox Film Corporation. It was directed by Daniel Petrie and produced by Martin Richards, Thomas Fiorello, with David Susskind as executive producer...