His Grace, The Duke of Ankh, Commander Sir Samuel "Sam" Vimes is a fictional character in Terry Pratchett's Discworld series of novels and short stories. He is a major character in six novels and one

Men at Arms is a fantasy novel by British writer Terry Pratchett, the 15th book in the Discworld series, first published in 1993. It is the second novel about the Ankh-Morpork City Watch on the Discwo