A Wizard In War

Landing in the midst of a pitched battle, Magnus rescues a cunning self named Coll, who has nearly lost his life to a band of marauding knights. From Coll, Magnus learns that Maltroit is ripe for revolution. The greedy nobles of the land of Aggrand, led by the ruthless Earl Insol, have risen up to defy an arrogant young king, throwing away the lives of the oppressed in their struggle for power. Magnus disguises himself as a mercenary soldier to spy upon the warring camps, and before you can say Magna Carta, he's bent the course of history by teaching the nobles the rudiments of democracy and schooling the peasants in the basics of radical politics.
Magnus Gallowglass, the bold interstellar renegade, returns to liberate another world, Maltroit, from bloodshed and oppression in his third outrageous adventure. Using the name Gar Pike, Magnus befriends a cunning serf named Coll and learns that Maltroit is ripe for revolution. Disguised as a mercenary soldier, Gar sets powerful nobles against an arrogant king.