March Upcountry (Empire of Man, #1)

March Upcountry is the first novel in the science fiction series of the Empire of Man by David Weber and John Ringo. It tells the story of Prince Roger MacClintock and his bodyguards of the Empress' Own Regiment who get marooned on the alien planet of Marduk due to an act of sabotage on their ship and must fight their way towards the local space port (held by enemies of the Terran Empire) in order to get back home to Earth. The book appeared on the New York Times best seller list.