Peter Frederick Egerton Elstob was a British soldier, adventurer, novelist, military historian and entrepreneur. In his writing he is best known for his lightly-fictionalized novel Warriors For the Working Day (1960) and his military history of the Battle of the Bulge, Hitler's Last Offensive (1971). He joined the Republican Army in the Spanish Civil War, and later served in the Royal Tank Regiment in World War II, in which service he was promoted to sergeant and was Mentioned in Despatches. He joined International PEN in 1962 and served first as general secretary and later as vice-president for seven years during the 1970s, rescuing the organisation from financial failure; he also secured the future of the Arts Theatre Club in London in 1946. He prospered as an entrepreneur with a facial product called Yeast Pac, with several partners. In his obituary in The Guardian newspaper, Elstob was said to be: ...one of those people born in the wrong century. With his charm and audacity, his passion for travel, and his love of risk-taking and financial gambles, he would have been more at home in the reign of Elizabeth I.

Adapted from Wikipedia: William Green (1927 – 2 January 2010) was an aviation and military author, following service with Britain's Royal Air Force, where he wrote for the Air Training Corps Gazette (later to be become the Air Pictorial). Green was Technical Director to the RAF Flying Review, and then Editorial Director when it became Flying Review International. In 1971 he and Gordon Swanborough jointly created the monthly Air International, of which he remained Managing Editor until late 1990. Green edited numerous editions of Observers book of Aircraft and spent most of his adult life doing research and writing on aircraft and aviation. His work Warplanes of the Third Reich is seen as a classic aviation publication. Along with Gordon Swanborough, he also wrote several books for Salamander Books including The Illustrated Encyclopedia of the Worlds Commercial Aircraft, Illustrated Anatomy of the World's Fighters and Flying Colours.

Martin Caidin was a prolific and controversial writer. Most of his work centered around the adventures of pilots and astronauts. A number of his books were notable for their reasonable, realistic predictions of then-futuristic technology. Caidin's body of work was prolific and varied, ranging from additional speculative/SF novels such as Marooned, which was made into an acclaimed film and considered a harbinger of the Apollo 13 accident, to a novel based upon the character Indiana Jones. He also wrote many non-fiction books about science, aviation and warfare. Caidin began writing fiction in 1957. In his career he authored more than 50 fiction and nonfiction books as well as more than 1,000 magazine articles. His best-known novel is Cyborg, which was the basis for "The Six Million Dollar Man" franchise. He also wrote numerous works of military history, especially concerning aviation. In addition to his writing Caidin was a pilot and active in the restoration and flying of older planes.

British author and historian who specialized in military history and military biography, particularly of the Second World War. Macksey was commissioned in the Royal Armoured Corps and served during the Second World War (earning the Military Cross under the command of Percy Hobart). Macksey later wrote the (authoritative) biography of Hobart.Macksey gained a permanent commission in 1946, was transferred to the Royal Tank Regiment in 1947, reached the rank of major in 1957 and retired from the Army in 1968. Amongst many other books, Macksey wrote two volumes of alternate history, one, entitled Invasion, dealt with a successful invasion of England by Germany in 1940 and the other describing a NATO–Warsaw Pact clash in the late 1980s. The latter book was done under contract to the Canadian Forces and focuses on the Canadian role in such a conflict. He was an editor and contributor to Greenhill's Alternate Decisions series since 1995. In Macksey's Guderian – Panzer General, he refuted the view of historian Sir Basil Liddell-Hart regarding Hart's influence on the development of German Tank Theory in the years leading up to 1939.

Charles B. MacDonald was a former Deputy Chief Historian for the United States Army. He wrote several of the Army's official histories of World War II. After graduating from Presbyterian College, MacDonald was commissioned as a US Army officer through the Army ROTC and deployed to Europe. By September 1944, as a 21 year old Captain, he commanded a rifle company in the 23rd Infantry Regiment, 2nd Infantry Division. MacDonald received the Silver Star and the Purple Heart. His first book, ''Company Commander'', was published in 1947, while his wartime experiences were fresh in his mind. MacDonald wrote the final volume of the Green Series on the European Theatre, ''The Last Offensive''. He retired as Deputy Chief Historian, United States Army Center of Military History in 1979. After his retirement, MacDonald wrote ''A Time for Trumpets'', his last book, a personal history of the Ardennes Offensive which concentrates on the first two weeks of the battle, which he spent five years researching. MacDonald also wrote or co-wrote two other books of the Green Series, ''The Siegfried Line Campaign'' and ''Three Battles: Arnaville, Altuzzo, and Schmidt''. He also contributed to ''Command Decisions''. MacDonald suffered from cancer and lung disease and he died on December 4, 1990 at his home in Arlington, Virginia.

Alfred Price seved for 16 years as an aircrew officer in the Royal air Force where he specialised in electronic warfare and air fighting tactics. He left the RAF in 1974 and thereafter he worked full time as a writer on aviation subjects. He holds a PhD in history from Loughborough University and is a Fellow of the Royal Historical Society.

Ian V. Hogg enlisted in the Royal Artillery of the British Army in April 1945. During World War II he served in Europe and in eastern Asia. After the war he remained in the military. In the early 1950s, he served in the Korean War. Altogether he served in the military for 27 years. Upon retiring in 1972, he held the appointment of Master Gunner at the Royal Military College of Science, where he taught on the subjects of firearms, artillery, and their ammunition and use. Hogg also had an interest in the subject of fortification and was one of the founding members of the Fortress Study Group in 1975. His first books were published in the late 1960s while he was still an instructor. After retiring from the military, he pursued the career of military author and historian. He was editor of Jane's Infantry Weapons from 1972 to 1994. He worked with a skilled artist, John Batchelor, to ensure that his books were well illustrated with cutaway diagrams. He contributed articles to a variety of journals, and his books have been translated into a dozen languages . Hogg has been described by publishing people who worked with him as "an unassuming man, with a gift to pass on [his] knowledge at any level, and often with a dry humour". He was also respected for his professionalism as an author. He was described as "a consummate professional who (unlike most of his peers) usually submitted manuscripts on time, within agreed parameters, and accompanied by all the illustrations." Hogg was a frequent guest on the History Channel's Tales of the Gun, as well as other military-related television programs. -Wikipedia