Question: Iain Gale's book was acclaimed by an author best known for his novels about what?

Context paragraphs:
Gary Brandner: Gary Phil Brandner (May 31, 1930 – September 22, 2013) was an American horror fiction author best known for his werewolf themed trilogy of novels, "The Howling".  The first book of the series was adapted loosely as a motion picture during 1981.  Brandner's second and third Howling novels, published during 1979 and 1985 respectively, have no association with the movie series, though he was involved with writing the screenplay for the second "Howling" movie, "".  The fourth movie of the Howling series, "", is actually the closest adaptation of Brandner's original novel, though this too varies to some degree.

Iain Gale: Iain Gale is a journalist and author born in 1959, who writes military novels.  His book "Four Days in June", about the Battle of Waterloo, was well received and acclaimed by Bernard Cornwell.  He is also the writer of eleven non-fiction books.

Mark Timlin: Mark Timlin (born 15 June 1944, in Cheltenham) is a British author best known for his series of novels featuring Nick Sharman, a former Metropolitan Police officer who takes up the profession of private investigator in South London.  The Sharman books are characterised by their noir tone and their fast action, and feature a high casualty rate among their characters; Sharman himself is frequently injured or even hospitalised in the course of the novels.  The books formed the basis for the TV series "Sharman", in which Clive Owen played the eponymous detective; Timlin made a cameo appearance in the pilot episode.

Joe Clifford Faust: Joe Clifford Faust (born 1957) is an American author best known for his seven science fiction novels primarily written during the 1980s and 1990s, including "A Death of Honor", "The Company Man", the "Angel's Luck" Trilogy (all published by Del Rey Books), and the satirical Pembroke Hall novels (published by Bantam Spectra).  His novels are known for their tightly controlled plots and their sense of humor.

Bernard Cornwell: Bernard Cornwell, OBE (born 23 February 1944) is an English author of historical novels and a history of the Waterloo Campaign.  He is best known for his novels about Napoleonic Wars rifleman Richard Sharpe.  Cornwell has written historical novels primarily of English history in five series and one series of contemporary thriller novels.  A feature of his historical novels is an end note on how the novel matches or differs from history, for the re-telling, and what one might see at the modern site of the battles described in the novel.  One series of historical novels is set in the American Civil War.  He wrote a nonfiction book on the battle of Waterloo, in addition to the fictional story of the famous battle in the Sharpe Series.  Two of the historical novel series have been adapted for television; the Sharpe television series by ITV and "The Last Kingdom" by BBC.  He lives in the US with his wife.  He alternates between Cape Cod, Massachusetts and Charleston, South Carolina.

Nicole Krauss: Nicole Krauss (born August 18, 1974) is an American author best known for her four novels "Man Walks Into a Room" (2002), "The History of Love" (2005), "Great House" (2010) and "Forest Dark" (2017).  Her fiction has been published in "The New Yorker", "Harper's", "Esquire", and "Granta's Best American Novelists Under 40", and has been collected in "Best American Short Stories 2003" and "Best American Short Stories 2008".  Her novels have been translated into 35 languages.  In 2010, she was selected as one of "The New Yorker's" "20 Under 40" writers to watch.  In 2011, Nicole Krauss won an award from the Anisfield-Wolf Book Awards for "Great House".

Gary Raisor: Gary Raisor is an American horror author best known for the novels "Less Than Human", "Graven Images", "Sinister Purposes", and his extensive short fiction work.  His novels garnered reviews.  He was nominated for a Bram Stoker Award for Best First Novel for "Less Than Human" in 1992.

Lucy Christopher: Lucy Christopher is a British/Australian author best known for her novel "Stolen", which won the Branford Boase award 2010 in the UK, and the 2010 Gold Inky in Australia.  Her second book, "Flyaway", was shortlisted for the 2010 Costa Book Awards and the 2010 Waterstone's Children's Book Prize.  She currently lives in the United Kingdom and is working on her fourth novel, as well as the screenplay for her critically acclaimed novel "Stolen".

Eric Jerome Dickey: Eric Jerome Dickey (born July 7, 1961) is a "New York Times" best-selling American author best known for his novels about contemporary African-American life.  He is also known for writing several crime novels involving grifters, ex cons, and assassins, the latter novels having more diverse settings, moving from Los Angeles to the United Kingdom to the West Indies, each having an international cast of characters.

Zane Grey: Pearl Zane Grey (January 31, 1872 – October 23, 1939) was an American dentist and author best known for his popular adventure novels and stories associated with the Western genre in literature and the arts; he idealized the American frontier. " Riders of the Purple Sage" (1912) was his best-selling book.  In addition to the commercial success of his printed works, they had second lives and continuing influence when adapted as films and television productions.  His novels and short stories have been adapted into 112 films, two television episodes, and a television series, "Dick Powell's Zane Grey Theater".

Supporting paragraphs: Iain Gale Bernard Cornwell
Answer: Napoleonic Wars rifleman Richard Sharpe