The Deer Hunter – Michael Cimino (1978), Full Metal Jacket – Stanley Kubrick (1987), Apocalypse Now Redux – Francis Ford Coppola (1979)

“The Deer Hunter is a 1978 American epic war drama film co-written and directed by Michael Cimino about a trio of Russian-American steelworkers whose lives were changed forever after fighting in the Vietnam War. The three soldiers are played by Robert De Niro, Christopher Walken, and John Savage, with John Cazale (in his final role), Meryl Streep, and George Dzundza playing supporting roles. The story takes place in Clairton, Pennsylvania, a working-class town on the Monongahela River south of Pittsburgh, and in Vietnam. …”
W – The Deer Hunter, YouTube: The Deer Hunter Official Trailer #1

“Full Metal Jacket is a 1987 war drama film that was directed and produced by Stanley Kubrick, who also co-wrote the screenplay with Michael Herr and Gustav Hasford. … The storyline follows a platoon of U.S. Marines through their boot camp training in Marine Corps Recruit Depot Parris Island, South Carolina, primarily focusing on privates Joker and Pyle, who struggle under their abusive drill instructor Gunnery Sergeant Hartman. The second half of the film portrays the experiences of two of the platoon’s Marines in Vietnamese cities Da Nang and Huế during the Tet Offensive of the Vietnam War. …”
W – Full Metal Jacket, YouTube: Full Metal Jacket Trailer

“Apocalypse Now Redux is a 2001 American extended version of Francis Ford Coppola‘s epic 1979 war film Apocalypse Now. Coppola, along with editor/longtime collaborator Walter Murch, added 49 minutes of material that had been removed from the original film. It represents a significant re-edit of the original version. … He later changed his mind (after working on the reconstruction of Orson Welles‘ Touch of Evil). Coppola and Murch then examined several of the rough prints and dailies for the film. It was decided early on that the editing of the film would be like editing a new film altogether. One such example was the new French plantation sequence. …”
W – Apocalypse Now Redux, YouTube: Apocalypse Now redux – Trailer