Question: Which American combat pilot from World War II was portrayed by Robert Conrad Falk on Baa Baa Black Sheep?

Context paragraphs:
Baa Baa Black Sheep (TV series): Baa Baa Black Sheep (later syndicated as Black Sheep Squadron) is a period military television series that aired on NBC from 1976 until 1978.  Its premise was based on the experiences of United States Marine Corps aviator Greg Boyington and his World War II "Black Sheep Squadron".  The series was created and produced by Stephen J. Cannell.  The opening credits read: "In World War II, Marine Corps Major Greg 'Pappy' Boyington commanded a squadron of fighter pilots.  They were a collection of misfits and screwballs who became the terrors of the South Pacific.  They were known as the Black Sheep."

Larry Manetti: Lawrence Francis "Larry" Manetti (born July 23, 1947) is an American actor best known for his role as Orville Wilbur Richard "Rick" Wright on the long-running CBS television series "Magnum P.I." which starred Tom Selleck as the title character.  He also starred as Maj. Pappy Boyington's (played by Robert Conrad) pilot partner 1LT Robert A. "Bob/Bobby" Boyle in "Baa Baa Black Sheep".

Byron Chung: Byron Chung is a Korean actor who has guest-starred in several television series and mainstream films.  Some of his notable roles include appearances in television shows such as "Temperatures Rising", "The Streets of San Francisco", "The Fantastic Journey", four episodes of "Baa Baa Black Sheep", "The Rockford Files", "Salvage 1", seven episodes of "M*A*S*H", "Hunter", "Gabriel's Fire", "The Agency", "The West Wing", "Alias", and four episodes of "Lost".  He was a regular, playing PROBE Control technician Kuroda, on early episodes of the 1972 TV series "Search", and appeared in the pilot film for that series, "Probe".  Most recently he appeared on an episode of "Dark Blue" where he played a nefarious, upscale Korean mobster.

Dirk Blocker: Dennis Dirk Blocker (born July 31, 1957), better known as Dirk Blocker, is an American actor.  The son of actor Dan Blocker and Dolphia Lee Blocker ("née" Parker), he currently co-stars as Detective Hitchcock on the Fox comedy series "Brooklyn Nine-Nine".  He was a regular on "Baa Baa Black Sheep" (1976-1978), playing pilot Jerry Bragg.

James Whitmore Jr.: James Allen Whitmore III (born October 24, 1948), better known as James Whitmore Jr., is an American actor best known for his role as Captain Jim Gutterman on the television program "Baa Baa Black Sheep", and (since the 1980s) a television director.  He is the son of actor James Whitmore.

W. K. Stratton: W.K. Stratton (William Kip Stratton) is an American writer, known for his historical non-fiction publications.  Stratton lives in suburban Austin, Texas.  (Note: This is "not" the actor W. K. Stratton from the television show Baa Baa Black Sheep.)

Gordon M. Graham: Gordon Marion Graham (16 February 1918 – 22 March 2008) was a United States Air Force Lieutenant General.  Graham was a combat pilot who, during World War II was credited with 7 aerial victories making him a flying ace.  He is credited with a further 9.5 aircraft destroyed on the ground.  By the end of World War II, Graham had flown 73 combat missions in the P-51 Mustang.

Robert Conrad: Robert Conrad Falk (born Conrad Robert Falk; March 1, 1935) is an American film and television actor, singer, and stuntman.  He may be best known for his role in the 1965–69 television series "The Wild Wild West", playing the sophisticated Secret Service agent James T. West.  He portrayed World War II ace Pappy Boyington in the television series "Baa Baa Black Sheep" (later syndicated as "Black Sheep Squadron").  He was a recording artist of pop/rock songs in the early 1960s as Bob Conrad before he began his acting career.  He has hosted a weekly two-hour national radio show ("The PM Show with Robert Conrad") on CRN Digital Talk Radio since 2008.

Pappy Boyington: Gregory "Pappy" Boyington (December 4, 1912 – January 11, 1988) was an American combat pilot who was a United States Marine Corps fighter ace during World War II.  He received both the Medal of Honor and the Navy Cross.

Katherine Cannon: Katherine Cannon (born September 6, 1953) is an American actress.  Her early roles included "Fools' Parade" (1971), "Private Duty Nurses" (1971), "Women in Chains" (1972), Emergency!  (1973), Baa Baa Black Sheep (TV series) (1977–1978) as Lt. Cmdr. Dottie Dixon (Head Nurse), and CHiPs (1978 and 1981) as female trucker Robbie Davis, but she first attracted notice in "" (1980) playing Amy Kane, the part originated by Grace Kelly in "High Noon".  She later played the school teacher, Mae Woodward, in the TV series, "Father Murphy", and appeared in the sci-fi thriller "The Hidden" in 1987.  She is currently best known for playing Felice Martin, the cheating and domineering mother of Donna Martin (Tori Spelling), on the long-running teen series, "Beverly Hills, 90210".

Supporting paragraphs: Robert Conrad Pappy Boyington
Answer: Gregory "Pappy" Boyington