Uller Uprising

General Carlos von Schlichten is overseeing operations of the Chartered Uller Company on the colony world of Uller when a violent riot breaks out between native Ullerans and colonist Terrans. As the conflict expands to a full rebellion he must restore order to the planet while managing the complex political dynamics of the different alien factions.
Published in 1952, Uller Uprising is the first novel by H. Beam Piper that establishes his Terro-Human Future History universe