In the years following World War II, a few writers followed de Camp’s lead and produced
thoughtful alternate histories of their own. H. Beam Piper’s Paratime stories and Poul Anderson’s
tales of the Time Patrol (and, in a different vein, his stories collected inOperation Chaos , in which
magic reappeared in the world as a technology around the beginning of the twentieth century) stand
out among these.
For the centennial of the War Between the States, Pulitzer Prize winner MacKinlay Kantor wroteIf
the South Had Won the Civil War , an optimistic scenario in which the severed parts of our nation
reunite in the 1960s. Also coming into prominence during the decades following the end of the
Second World War were stories in which the Axis won, which have challenged stories of
Confederate victories in the Civil War for popularity. Three of the best of the earlier ones were
Sarban’sThe Sound of His Horn , C. M. Kornbluth’s great novella, “Two Dooms,” and Philip K.
Dick’s Hugo-winning novel,The Man in the High Castle .
In the 1960s, two Englishmen, John Brunner and Keith Roberts, produced stimulating alternate
histories on a subject particularly relevant to British hearts: a successful invasion by the Spanish
Armada. Brunner’sTimes Without Number examined why travel between different time lines
doesn’t happen more often, while Roberts’ beautifulPavane looked at, among other things, the
consequences of slowing down technological growth (strictly speaking,Pavane isn’t an alternate
history, but a first cousin: a recursive future). At about the same time, Keith Laumer, inWorlds of
the Imperium and its two sequels, did a first-rate job of combining alternate history with fast-
moving adventure.
But alternate history really became a more prominent subgenre in the last two decades of the
twentieth century. There are a couple of reasons for this. One is that, with our much greater
knowledge of the true nature of the solar system, we have found that it looks much less inviting
than it did a couple of generations ago. There are no canals on Mars, and no Martians, either; nor
are there oceans on Venus full of reptilian monsters. Before the space probes went out, these were
scientifically plausible speculations. No more; brute facts have killed such possibilities.
Furthermore, more people trained in history have begun writing science fiction, and have naturally
gravitated to areas with which they find themselves familiar: S. M. Stirling, with a law degree and
an undergraduate degree in history; Susan Shwartz and Judith Tarr, both with doctorates in western
medieval studies; and myself, with a doctorate in Byzantine history (a subject I was inspired to
study, as I’ve said, byLest Darkness Fall ).
Stirling’s Draka universe, commencing withMarching Through Georgia , is as thoroughly
unpleasant a place as any ever envisioned by an alternate historian, but, especially inUnder the Yoke
, alarmingly convincing as well. His more recent trilogy, beginning withIsland in the Sea of Time ,
drops the entire island of Nantucket back to about 1250B .C. and examines the consequences with
fine writing, splendid research, and careful logic.
Shwartz and Tarr have both combined fantasy and alternate history in intriguingly different ways.
Shwartz’s series that begins withByzantium’s Crown looks at a magical medieval world that might
have sprung from Cleopatra’s victory over Octavian, while Tarr’s beautifully written the Hound and
the Falcon trilogy and other succeeding books examine what the world might have been like if
immortal elves were real rather than mythical.
My own book-length work includesAgent of Byzantium , set in a world where Muhammad did not
found Islam;A Different Flesh, in whichHomo erectus rather than American Indians populated the
New World;A World of Difference, which makes the planet in Mars’s orbit different enough to