Operation Otherworld Series by Poul Anderson

The prequel to the popular Operation Luna. In a war waged against black magic, a werewolf and his witch wife are called upon to neutralize an enemy's ultimate weapon--the world's most powerful demon.Set in a fantasy alternate history United States where magic and technology combine. Werewolfery is not only hereditary, but a recessive gene, and the polarized component of moonlight has been isolated, so that the hero can use a Were-flash to transform without the full moon.

Poul Anderson, recently the winner of the Nebula's Grandmaster Award for lifetime achievement, returns to the world of his acclaimed novel Operation Chaos with the tale of one family's mission to the moon. Ginny Greylock and Steven Matuchek are partners an Earth quite unlike our own. For starters, Ginny is a licensed witch and Steve is an engineer and werewolf. Steve moonlights by working on a spacecraft in the Arizona desert, a project which soon discovers that there is life on the moon... morePoul Anderson, recently the winner of the Nebula's Grandmaster Award for lifetime achievement, returns to the world of his acclaimed novel Operation Chaos with the tale of one family's mission to the moon. Ginny Greylock and Steven Matuchek are partners an Earth quite unlike our own. For starters, Ginny is a licensed witch and Steve is an engineer and werewolf. Steve moonlights by working on a spacecraft in the Arizona desert, a project which soon discovers that there is life on the moon. Neither Steve nor the US government has any inkling as to the nature of the moonsprites, and everyone is anxious to make contact. But when the time comes to test the spacecraft, a host of bugs, snafus, and angry spirits conspire to prevent the launch. It's a recipe for perfect lunacy as Ginny and her clan struggle to figure out who, or what, is sabotaging the greatest magical and scientific achievement of the century. less

Werewolf Steve Matuchek and witch Ginny Graylock defend America in this fantasy duology from the multiple Hugo and Nebula Award–winning author.  Operation Chaos: In a world where magic is real, werewolf Steve Matuchek and powerful witch Virginia Graylock are paired together in the war to stop the invading Caliphate forces from taking over America. Their mission: stop the enemy from unleashing their superweapon—a genie in a bottle... moreWerewolf Steve Matuchek and witch Ginny Graylock defend America in this fantasy duology from the multiple Hugo and Nebula Award–winning author.  Operation Chaos: In a world where magic is real, werewolf Steve Matuchek and powerful witch Virginia Graylock are paired together in the war to stop the invading Caliphate forces from taking over America. Their mission: stop the enemy from unleashing their superweapon—a genie in a bottle. And that is only the beginning of an adventure that will take them quite literally to Hell and back . . .   “Operation Chaos was one of the truly fine fantasies of the 1970s, a fantasy whose magic was so splendidly engineered that you felt it was as logical—and as likely—as our real technology.” —Harry Turtledove   “A great read, from a master writer at the top of his game.” —GirlsWithGuns.org  Operation Luna: Now married with three rambunctious children, Steve and Ginny once again find themselves fighting for their country as they try to stop a plot to sabotage America’s first manned mission to the moon (in an alternate history timeline, that is). But they will need help from a loyal cadre of magical allies if they hope to avert a catastrophe . . . “An enjoyable tale by a veteran writer who knows exactly what he’s doing.” —Publishers Weekly less

The gathering forces of the Dark Powers threatened the world of man. The legions of Faery, aided by trolls, demons and the Wild Hunt itself, were poised to overthrow the realms of light.And alone against the armies of Chaos stood one man, the knight of Three Hearts and Three Lions. Carlsen, a twentieth-century man snatched out of time to become again the legendary Holger Danske to fight for the world he had helped to build.

"What if Shakespeare were a historian & his world a mortal one of men & elves? Somewhere, spinning thru another universe is a history almost like ours except for the result of a revolution or two & the earlier incidence of a few inventions. A prince called Hamlet has lived in Denmark. The English woods are full of Pucks, Titanias & Oberons... more"What if Shakespeare were a historian & his world a mortal one of men & elves? Somewhere, spinning thru another universe is a history almost like ours except for the result of a revolution or two & the earlier incidence of a few inventions. A prince called Hamlet has lived in Denmark. The English woods are full of Pucks, Titanias & Oberons. Cromwell is at the throat of King Charles, but locomotives rage thru the verdant countryside & observation balloons tower over battle lines." less