This sourcebook was bundled with the adventure "Return to Axanar". From the book description: "[This book] details The Four Years War. Essays by Federation experts on Axanar, the major battles, and the political, social, and economic factors are indluded." From inside the book: "THE FOUR YEARS WAR A Concise Compilation of Library Information on the Conflict Between the United Federation of Planets and the Klingon Empire, stardates 1/9409 through 1/9806." A supplement for use with STAR TREK: The Role Playing Game."