Marcus, the Young Centurion

Marcus is eighteen, and his father had been a great Roman General, Cracis, who had fallen from grace some years before and was living quietly, farming in a small way in southern Italy. An old ex-soldier, Serge, works on the farm, and is helping to bring Marcus up. Marcus would like to be a soldier, and is encouraged in this by Serge, but his father has forbidden any discussion of the topic. One day a stranger comes to the door. This turns out to be none other than Caius Julius, later Caesar, who begs Marcus' father to join him in a war against the Gauls. He agrees, and goes, having made Marcus and Serge promise that they would not try to follow him. But they do, independently, and then meet accidentally. Serge was being attacked by bandits, and Marcus sees this happening and rushes to the rescue, so they are reunited, later to be joined also by the household dog, Lupe, who has tracked them across Italy. On reaching Rome they are just in time to join the last unit of the Roman army as it leaves for the war. They make their way across the mountains and into Gaul (France), where battles ensue, in which they distinguish themselves, and are brought to the notice of the Generals, whom they had rescued from personal disaster during the battle. So Marcus' military career is assured. According to Wikipedia: "George Manville Fenn (January 3, 1831, Pimlico - August 26, 1909, Isleworth) was a British writer. He worked as a teacher in Lincolnshire, until he became printer, editor and publisher of various magazines. He had eight children with his wife Susanna Leake, whom he had married in 1855. Most of his work consists of adventure stories for young readers, featuring Explorers, Smugglers, young Adventurers and Seamen. His adult novels offer critical social commentary on Victorian England, especially reconsidering economic questions."