He was the only person to have an actual military service record on Stargate SG-1 (1997).

A former captain in the US Army, stationed in Korea in the later 1960s.

Was also a skilled artist and wood craftsman.

Graduated with a Bachelor of Science degree, including a double major in theatre and art from Southwest Missouri State College in 1965. Graduated with an MA in Theatre from Southern Illinois University in 1970. Taught for ten years at the University of British Columbia, then completed his PhD in theatre at SIU in 1982.

Was paid a posthumous tribute by the makers of Stargate: Atlantis (2004) by having a new starship named for his character, General Hammond, who also died unexpectedly.

Worked with Richard Dean Anderson before the Stargate SG-1 (1997) series; he was Dana Elcar's body double on MacGyver (1985) and played roles as a cement truck driver and illegal hunter Wyatt Porter. Before his untimely death one month later, his final appearance was with Rick in Stargate: Continuum (2008).

His last appearance as "Gen. Hammond" was in Stargate: Continuum (2008), which was released in the US a month after his death.

His hobbies included painting, drawing and woodcarving.

Among his most important guest-appearances for TV was the part of Captain William Scully, Dana Scully's father, on The X-Files (1993).

Had appeared in five different productions with Michael Shanks: A Family Divided (1995), Stargate SG-1 (1997), The Artist's Circle (2000), Suspicious River (2000), and Stargate: Continuum (2008).

Graduate of Southern Illinois University Carbondale.

Don who hails from Missouri never lost his southern accent throughout his long acting career. It seems odd that he only accepted or was offered very few western genre roles. Only 2 to be exact!.

Has a son, Matt Davis, with his first wife, Sondra Sue Davis.

Had appeared in episodes of four different series with Bruce Harwood: MacGyver (1985), The X-Files (1993), Honey, I Shrunk the Kids: The TV Show (1997) and Stargate SG-1 (1997).

Although Peter Williams was the main recurring guest star on Stargate SG-1 (1997) for four years, he and Davis only shared a scene in three episodes: Children of the Gods (1997), Serpent's Song (1999) and Point of View (1999).

In one year (1991), appeared in two different productions in which a game of chess was played where humans are used for game pieces and if captured, they would be killed: Twin Peaks (1990) and the "All the King's Horses" episode of "Monkey Planet" (2000).

Had appeared with Steve Bacic in five different productions: She Stood Alone: The Tailhook Scandal (1995), Stargate SG-1 (1997), The 6th Day (2000), Andromeda (2000), and Stargate: Continuum (2008).

Was a frequent co-star of Jay Brazeau.

Appeared in episodes of two different series entitled "Crossroads": Crossroads (1998) and Crossroads (2000). There is also an episode of the latter series entitled The Sentinel (2002).

Had appeared in three different productions which featured a character named Dr. Weir: The 6th Day (2000), Stargate SG-1 (1997) and Stargate: Atlantis (2004).

Davis often played characters in four branches of the US military. He played a US Air Force general on Stargate SG-1 (1997) and Major in Twin Peaks (1990), a US Marine sergeant in A Few Dead Men (1994), a US Navy Captain on The X-Files (1993), and a US Army general in The Voice of Reason (1995).

Was a frequent co-star of Jerry Wasserman.

Son of MT Davis.