Title: McCabe &amp; Mrs. Miller
Content:  Maddow, a well-known poet and screenwriter. In 1969, Altman was in post-production on M*A*S*H and sneaked Foster into the screening; Foster liked the film, and signed Altman to direct a film based on McCabe. They agreed to wait until M*A*S*H became a box-office hit to take the pitch for McCabe to a studio for funding. A second screenplay – independent of Maddow's – was commissioned from Brian McKay, who completed it in only five weeks. A revised version of that screenplay dated July 1970 became the "shooting script" for the film. Altman and McKay are listed in the film's credits as its screenwriters; Maddow 
Title: M*A*S*H
Content:  Richard Hooker wrote MASH: A Novel About Three Army Doctors (1968), based on his experiences as a surgeon at the 8055th MASH in South Korea. He published several other novels based on that group. A total of 15 M*A*S*H novels were published between 1968 and 1977, some co-authored by William E. Butterworth.
Title: MASH: A Novel About Three Army Doctors
Content:  MASH: A Novel About Three Army Doctors is a 1968 novel by Richard Hooker (the pen name for former military surgeon H. Richard Hornberger and writer W. C. Heinz ) which is notable as the inspiration for the feature film M*A*S*H (1970) and the TV series of the same name (1972–1983). The novel is about a fictional U.S. Mobile Army Surgical Hospital in Korea during the Korean War. Hooker followed the novel with two sequels. Additionally, a series of sequels of rather different and lighter tone were credited to Hooker and William E. Butterworth, but actually written by Butterworth alone.
Title: M*A*S*H (film)
Content:  M*A*S*H (stylized on-screen as MASH) is a 1970 American black comedy war film directed by Robert Altman and written by Ring Lardner Jr., based on Richard Hooker's 1968 novel MASH: A Novel About Three Army Doctors. The picture is the only theatrically released feature film in the M*A*S*H franchise, and it became one of the biggest films of the early 1970s for 20th Century Fox. The film depicts a unit of medical personnel stationed at a Mobile Army Surgical Hospital (MASH) during the Korean War. It stars Donald Sutherland, Tom Skerritt, and Elliott Gould, with Sally Kellerman, Robert Duvall, René Auberjonois, Gary Burghoff, Roger Bowen, Michael Murphy, and in his film debut, professional football player Fred Williamson. Although the Korean War is the film's storyline setting, the subtext is the Vietnam War – a current event at the time the film 
Title: Robert Altman
Content:  In 1969, Altman was offered the script for MASH, an adaptation of a little-known Korean War-era novel satirizing life in the armed services; more than a dozen other filmmakers had passed on it. Altman had been hesitant to take the production, and the shoot was so tumultuous that Elliott Gould and Donald Sutherland tried to have Altman fired over his unorthodox filming methods. Nevertheless, MASH was widely hailed as a classic upon its 1970 release. It won the Palme d'Or at the 1970 Cannes Film Festival and netted five Academy Award nominations. It was Altman's highest-grossing film, released during a time of increasing anti-war sentiment in the United States. The Academy Film Archive preserved MASH in 2000. 
Title: M*A*S*H
Content:  M*A*S*H is a 1970 feature film adaptation of the original novel. The film was directed by Robert Altman and starred Donald Sutherland as Hawkeye Pierce and Elliott Gould as Trapper John McIntyre. Although the title had no punctuation onscreen, i.e. "MASH", in posters for the movie and in the trailer, it was rendered as M*A*S*H.
Title: Richard Hooker (author)
Content:  Hiester Richard Hornberger Jr. (February 1, 1924 – November 4, 1997) was an American writer and surgeon who wrote under the pseudonym Richard Hooker. Hornberger's best-known work was his novel MASH (1968), based on his experiences as a wartime United States Army surgeon doctor during the Korean War (1950–1953) and written in collaboration with W. C. Heinz. It was used as the basis for an award-winning, critically and commercially successful movie – M*A*S*H (1970) — and two years later in an acclaimed long running television series (1972–1983) of the same name.
Title: M*A*S*H (film)
Content:  The screenplay, by Ring Lardner Jr., is different from Hooker's original novel. In the DVD audio commentary, Altman describes the novel as "pretty terrible" and somewhat "racist" (the only major black character has the nickname "Spearchucker"). He claims that the screenplay was used only as a springboard. Despite this assertion by Altman, however, while some improvisation occurs in the film and Altman changed the order of major sequence, most sequences are in the novel. The main deletion is a subplot of Ho-Jon's return to the 4077th as a casualty (when Radar steals blood from Henry, it is for Ho-Jon's operation under Trapper and Hawkeye's scalpels; when the surgeons are playing poker after the football game, they are resolutely ignoring Ho-Jon's corpse being driven away). The main deviation from the script is 
Title: W. C. Heinz
Content:  the game that he loved. In the late 1960s, Heinz collaborated with H. Richard Hornberger to write the novel MASH, published under Hornberger's pen name Richard Hooker. The book was the precursor to the film MASH, which won the award for best film of the 1970 Cannes Film Festival and an Academy Award for best screenplay based on another medium in 1971. The book also served as the prototype for the long-running, Emmy Award-winning television series. In 2015, the Library of America published a collection of his best sportswriting, The Top of His Game. A collection of Heinz's war writings including his dispatches from Europe and some post-war articles were republished in his book, When We Were One: Stories of World War II.
Title: Gosford Park
Content:  its name. It's not a gripping title. But then MASH wasn't either." Fellowes says the screenplay was "not an homage to Agatha Christie, but a reworking of that genre." Fellowes was credited not only as the film's writer but as a technical advisor as well, meaning he wrote portions of the film as it was being produced. He notes that in certain large scenes with many characters, the actors were left room to improvise. Arthur Inch, the retired butler of Sir Richard and Lady Kleinwort, was the consultant on correct procedures and arrangements for dining on the set. Inch is credited as "Butler" immediately before Altman as Director in the final credits. Ruth Mott was the consultant for the kitchen, and Violet Liddle for the parlour maids.

Question: Who was the screenwriter for MASH?
Answer: Ring Lardner.
Ring Lardner, Jr.