Yossarian is a hero who is incessantly imaginative in his schemes to save his skin from the atrocious chances of war. His trouble is Colonel Cathcart, who keeps increasing the number of missions the men must fly to complete their service. Nevertheless, if Yossarian makes any feats to alibi himself from the touch-and-go missions that he is confided to flying, he’s freed by the Great Loyalty Oath Crusade, the bureaucratic rule from which the book gets its title.