The Wild Geese is a 1978 war film directed by Andrew V. McLaglen and starring Richard Burton, Roger Moore, Richard Harris, and Hardy Krüger. The screenplay concerns a group of mercenaries in Africa. It was the result of a long-held ambition of its producer Euan Lloyd to make an all-star adventure film similar to The Guns of Navarone or Where Eagles Dare. The producer and director would later make The Sea Wolves starring several cast members from this film.

The screenplay by Reginald Rose was based on an unpublished novel titled The Thin White Line by Daniel Carney. The film was named The Wild Geese after the Wild Goose flag and shoulder patch used by Michael "Mad Mike" Hoare's Five Commando, ANC, which in turn was inspired by a 17th-century Irish mercenary army (see Flight of the Wild Geese). Carney's novel was subsequently published by Corgi Books under the same title as the film.

The novel was based upon rumours and speculation following the 1968 landing of a mysterious aeroplane in Rhodesia, which was said to have been loaded with mercenaries and "an African president" believed to have been a dying Moïse Tshombe.

Allen Faulkner, a former British Army colonel turned mercenary, arrives in London to meet merchant banker Sir Edward Matheson. The latter proposes an operation to rescue Julius Limbani, the imprisoned President of a southern African nation who is due for execution by General Ndofa. President Limbani is held in a remote prison in Zembala, guarded by a regiment of General Ndofa's troops known as the "Simbas".

Faulkner accepts the assignment and begins recruiting forty-nine mercenaries, including officers he had worked with previously: Capt. Rafer Janders, a skilled tactician, and Lt. Shawn Fynn, a former Irish Guards officer and pilot. Fynn also brings in Pieter Coetzee, a former soldier in the South African Defence Force who wishes only to return home and buy a farm. The mercenaries fly to Swaziland, where they are whipped into shape. With training complete, Janders exacts a promise from Faulkner to watch over his only son, Emile, should he not survive.

Because of an unexpected development, Faulkner is given only a day's notice to launch the mission. On Christmas Day, the fifty-man mercenary group parachute into Zembala by a HALO jump. One group rescues an alive, though sick, Limbani from a heavily guarded prison, while another group takes over a small, nearby airfield to await pick-up. Back in London, however, Matheson cancels the extraction flight at the last moment, having secured copper mining assets from General Ndofa in exchange for President Limbani. Stranded deep in hostile territory, the abandoned mercenaries fight their way through bush country, pursued by the Simbas. Many men, including Coetzee, are killed along the way.

The mercenaries make their way to Limbani's home village, hoping to start a rebellion, but realise that his people are too ill-equipped to fight. An Irish missionary living there informs the group of an old Douglas Dakota transport aircraft nearby that they can use to escape. As the Simbas close in, the mercenaries suffer heavy casualties holding them off in a climactic battle while Fynn starts the Dakota's engines. Janders is shot in the leg and unable to board the departing airplane. Faulkner is forced to kill him to spare him from capture and torture. The thirteen surviving mercenaries from the original fifty eventually manage to land at Kariba Airport, Rhodesia, but Limbani dies from a gunshot wound sustained during the escape.

Some months later, Faulkner returns to London and breaks into Matheson's home to confront him. Faulkner takes the half a million dollars in Matheson's safe to compensate the survivors and the families of those who died. Faulkner then kills Matheson and makes a swift getaway with Fynn. Faulkner fulfils his promise to Janders by visiting Emile at his boarding school.

Richard Burton as Colonel Allen Faulkner

Roger Moore as Lieutenant Shawn Fynn

Richard Harris as Captain Rafer Janders

Hardy Krüger as Lieutenant Pieter Coetzee

Stewart Granger as Sir Edward Matheson

Jack Watson as Regimental Sergeant Major Sandy Young

Frank Finlay as Father Geoghegen

Kenneth Griffith as Medic Arthur Witty

Jeff Corey as Mr. Martin

Barry Foster as Thomas Balfour

Winston Ntshona as President Julius Limbani

Ronald Fraser as Sergeant Jock McTaggart

John Kani as Sergeant Jesse Blake

David Ladd as Sonny

Ian Yule as Sergeant Tosh Donaldson

Patrick Allen as Rushton

Brook Williams as Samuels

Percy Herbert as Keith

Jane Hylton as Mrs. Young

Paul Spurrier as Emile Janders

Patrick Holt as Skyjacker