Empire of man

the long version

"March Upcountry and March to the Sea in one combination volume. Roger Ramius MacClintock was young, handsome, athletic, an excellent dresser, third in line for the Throne of Man and a spoiled, self-centered, petulant prince. Then the Empire's worst rivals sabotage and cripple his vessel and Roger and his Bravo Company of Bronze Battalion of the Empress's Own Regiment are stranded on the planet Marduk whose jungles are full of deadly predators and barbarian hordes with really bad dispositions. Now all Roger has to do is hike halfway across the planet, capture the spaceport from the Bad Guys, commander a ship and then go home to Mother for explanations"--