"The High Crusade" - https://en.wikipedia.org/wiki/The_High_Crusade https://en.wikipedia.org/wiki/The_High_Crusade . Sir Roger, Baron de Tourneville and his for

"The High Crusade" - https://en.wikipedia.org/wiki/The_High_Crusade https://en.wikipedia.org/wiki/The_High_Crusade . Sir Roger, Baron de Tourneville and his forces in 1345 take over an alien scouting ship and, based on their knowledge of medieval tactics and strategies, (as we learn in the last chapter) conquer the galaxy and create a holy galactic empire under a new branch of the Roman Catholic Church.