March Upcountry by John Ringo

This extensive text chronicles Prince Roger MacClintock's unexpected and perilous journey after being exiled to a distant planet, Marduk, following a royal family spat. Accompanied by his Marine bodyguards, led by Captain Pahner and Sergeant Major Kosutic, and his chief of staff Eleanora O'Casey, Roger finds himself on a "pointless mission" that quickly devolves into a fight for survival. The narrative details the harsh realities of Marduk's environment, including dangerous flora and fauna, challenging terrain, and the violent, often cannibalistic, indigenous Kranolta tribes. Through various engagements, diplomatic attempts, and treacherous alliances with other Mardukan factions like Cord's tribe, the group navigates complex political landscapes while Prince Roger undergoes a transformation from a spoiled royal to a more capable and respected leader, ultimately striving to fulfill their mission and find a way home.