Bucker joined Warner Bros as a writer. His first credit was Gold Is Where You Find It. He did some uncredited work on Jezebel and wrote Love, Honor and Behave, Comet Over Broadway, The Oklahoma Kid, and You Can't Get Away with Murder. Bucker had a big hit with Dodge City starring Errol Flynn, based on his original screenplay. He was credited on Angels Wash Their Faces, and Espionage Agent was based on his story. Bucker wrote a follow up to Dodge City, Virginia City with Flynn, and worked on the script for My Love Came Back. Bucker received acclaim for a biopic, Knute Rockne All American. He did a third Western for Flynn, Santa Fe Trail and was put on a war film for Flynn, Dive Bomber. Bucker had a huge success with his script for Yankee Doodle Dandy a biopic of George M Cohan. This resulted in Bucker being promoted to producer at Warners.
Producer
Buckner's first film as producer was Gentleman Jim a biopic of Jim Corbett starring Flynn. He produced Mission to Moscow a biopic of Joseph E Davies and wrote and produced The Desert Song. Bucker made another movie with Flynn, Uncertain Glory. He made God Is My Co-Pilot, and wrote and produced Confidential Agent with Charles Boyer. Buckner produced a popular Western with Flynn, San Antonio. He did a biopic of the Brontë family, Devotion, and did a crime drama, Nobody Lives Forever. Buckner produced a Western, Cheyenne, and the prestigious stage hit Life with Father. In June 1947 Buckner left Warner Bros for Universal.
Universal
Buckner's first film at Universal was Rogues' Regiment, which he wrote and produced, from a story by Buckner and director Robert Florey. He went on to wrote and produce Sword in the Desert, based on an old story of Buckner's which he had turned into a novel called Night Watch. It helped make a star of Jeff Chandler. He wrote and produced Free for All, Deported, shot in Italy with Chandler, and Bright Victory.
Freelance writer
Buckner provided the story for When in Rome and The Man Behind the Gun. He went to England to write To Paris with Love, House of Secrets and two for Warwick Films, A Prize of Gold and Safari. Buckner began writing for TV, adapting Twentieth Century and A Bell for Adano for Ford Star Jubilee.
Back in Hollywood Buckner wrote Love Me Tender at 20th Century Fox, a film best remembered as Elvis Presley's debut movie. In 1957 he wrote Sigrid and the Sergeant, his first prose in almost twenty years. The following year he wrote and produced From Hell to Texas directed by Henry Hathaway at Fox. Also for Fox Bucker created a TV series Hong Kong starring Rod Taylor. It only lasted a season, Bucker produced the pilot for a follow up, Dateline: San Francisco but it did not result in a regular series. At Disney he provided the story for Moon Pilot. Buckner went on to write episodes of The Rogues, Burke's Law, The Wackiest Ship in the Army, The Name of the Game and Bonanza. He also wrote the features Return of the Gunfighter.
Later life
In his later life, Buckner lived in San Miguel de Allende, Mexico. He was a fine artist and recognized leader in the art community there. He died and was buried in San Miguel in 1989. He is survived by his son Robert Buckner Jr., last known to be living in the Portland, Oregon area.
