(written from a Production point of view)
Gilbert Green (1 January 1914 – 15 April 1984; age 70) is the actor who played an Ekosian major in the "Patterns of Force" episode of Star Trek: The Original Series. He filmed his scenes on Wednesday 29 November 1967 and Friday 1 December 1967 at the Paramount Pictures lot and at Desilu Stage 11.
Green has made guest appearances on several other television series, including The Untouchables, Gunsmoke, Bonanza, Perry Mason, Bewitched, My Favorite Martian (starring Ray Walston), the pilot episode of Starsky and Hutch (with David Soul), Barney Miller (with Lee Meriwether), McCloud (with Diana Muldaur), The Rockford Files, Fantasy Island (starring Ricardo Montalban), Charlie's Angels, and Quincy (with Robert Ito and Garry Walberg).
He made his film debut in the 1961 thriller Homicidal, starring fellow TOS guest actor Glenn Corbett. He followed this with roles in such films as By Love Possessed (1961, with Yvonne Craig), Pressure Point (1962, with Clegg Hoyt and George Murdock), Dark Intruder (1965, with Peter Brocco and Bill Quinn), Halls of Anger (1970, with Janet MacLachlan, John McLiam, Roy Jenson, and Davis Roberts), The Man (1972, directed by Joseph Sargent and featuring William Windom, Janet MacLachlan, Robert DoQui, Barry Russo, Garry Walberg, and Vince Howard), Executive Action (1973, with John Anderson, Paul Carr, Ed Lauter, Lee Delano, Dick Miller, and Paul Sorenson), and, most notably, Norma Rae (1979, with Gail Strickland and Noble Willingham).