He was heavily involved in work with veterans, having served on the board of the National D-Day Memorial Foundation and in other similar roles. The couple raised three children (Peter Jr., Douglas McMillan, and Elizabeth) in Greenwich, Connecticut, and in 1985, they settled in Naples, Florida. Thomas married his high school sweetheart, Stella (née Barrineau) Thomas, on Jshe died on June 16, 2014. Thomas also recorded in many European capitals. He continued to keep an apartment in midtown Manhattan for recordings that required his presence there. Before pursuing narration full-time, he was the New York anchor for CBS News. Also using ISDN, he continued narrating at recording studios in New York City, where he had worked for the bulk of his narration career. He worked at his home and, through ISDN, at recording studios throughout the United States. Thomas was the narrator for the two-hour Nova episode entitled 'D-Day's Sunken Secrets,' broadcast May 28, 2014, just before the 70th anniversary of the D-Day landings in his youth, he had participated in the original D-Day landing on Omaha Beach. Thomas was also the narrator for a miniseries that ran on The Discovery Channel in 1993 entitled How the West was Lost. Thomas also participated in an HBO film on the Battle of Hürtgen Forest, in which he fought with the 1st Infantry Division.

Klein and Thomas met during the post-production of the documentary, and again at its premiere. The film, produced by HBO, chronicles the personal experience of Gerda Weissmann Klein, who was interned at the Nordhausen Concentration Camp when she was a teenager Thomas' unit participated in the liberation of Nordhausen. He received scores of awards for his work but cited, as one of his best, the Oscar won by a documentary he narrated, One Survivor Remembers. Thomas is still best known today for the series Forensic Files, which is broadcast in streams of episodes and has an enormous cult following. He was also awarded the Bronze Star, the Purple Heart, the Unit French Croix de Guerre, and Belgian Fourragère. He was issued a Battle star for each of the five campaigns. With the onset of World War II, Thomas left The Stony Brook School and volunteered for the United States Army in 1943, after being offered an Armed Forces Radio deferment, and served with the First Infantry Division in five major campaigns, including the Battle of Normandy and the Battle of the Bulge. Within a few years he was hosting Big Band remotes.

Since the station could not pay him due to his age, they arranged for the sponsor, Piper Aircraft, to give him flying lessons. Thomas began his career at 14 as an announcer on a local radio show. For example, he told his son if he was talking about horses he had to picture horses in his mind. Thomas says that his father stressed mental images as an important speaking tool. His father, a Church of England minister in Great Britain, then Presbyterian minister in the US, and his mother, who became a schoolteacher in the US, stressed the importance of reading, education, and memorization and visualization to their son. He had two younger brothers, John and David. Thomas, originally of Swansea, Wales, and Sibyl Addenbrooke, from Mumbles, Wales, daughter of Col. Thomas was born in Pensacola, Florida, to British parents John D. Peter Addenbrooke Thomas (J– April 30, 2016) was an American announcer and narrator of television programs with a career spanning more than 70 years, including shows such as Nova and Forensic Files.

Peter thomas narrator