I can recommend you a historical fiction novel called "Reborn as a Financial Magnate in Brazil". The protagonist of this book was a modern sailor. After being accidentally reborn as a soldier of the Brazilian Expeditionary Force, he relied on his own foresight to eventually become the story of Brazil's largest financial family. Although he wasn't the son of a military officer or a wealthy businessman, his character was from a powerful family. He had a similar background in finance and politics. I hope you will like this novel. Muah ~