In a sense, all fiction is alternate history. Did Odysseus rule in Ithaca? Where is Jack Aubrey in the recorded naval annals of the Napoleonic period? Did Rabbit Angstrom really play high school basketball? These characters are people that never were—that is what makes them part of fiction, after all.

Works that meet a relatively formal definition of alternate history have been with us since at least the nineteenth century. Aside from occasional fascinating literary sallies by the likes of Nathaniel Hawthorne and Benjamin Disraeli, most early counterfactual fictions were jingoistic wish-fulfillments or utopian whimsies, followed somewhat later by academic gedankenexperimenten. With the evolution of modern science fiction, alternate history came along for the ride, enriching the genre with visions of altered actualities to complement those of distant planets and turbulent futures.

Today alternate history is in its own right a major subgenre of speculative fiction. There are superstars such as Harry Turtledove and Eric Flint, more experimental efforts from Esther Friesner, Kim Stanley Robinson, and Christopher Priest, and continued incursions from literature by way of writers such as Peter Ackroyd and Philip Roth. Alternate history even has its own award, the Sidewise, named in honor of the seminal Murray Leinster short story “Sidewise in Time.” The award is administered by the estimable Steven H. Silver, whose dedication to the form is legendary.

Alternate history is alive and well and living on bookshelves worldwide. So why this anthology? Because, rightly or wrongly, alternate history has come to form a ghetto of its own within speculative fiction. A very large portion of the alternate history canon is concerned with militaria, fiction about soldiers and the wars they fight. This is as if an entire symphony orchestra were represented only by the brass section; however grand, the brass quickly becomes monotonous playing on its own.