Dr Harry Norman Turtledove is an American novelist, who has produced a sizeable number of works in several genres including alternate history, historical fiction, fantasy and science fiction.
Harry Turtledove attended UCLA, where he received a Ph.D. in Byzantine history in 1977.
Turtledove has been dubbed "The Master of Alternate History". Within this genre he is known both for creating original scenarios: such as survival of the Byzantine Empire; an alien invasion in the middle of the World War II; and for giving a fresh and original treatment to themes previously dealt with by other authors, such as the victory of the South in the American Civil War; and of Nazi Germany in the Second World War.
His novels have been credited with bringing alternate history into the mainstream. His style of alternate history has a strong military theme.
An enjoyable collection of Turtledove's shorts. Two are long enough to almost be books. There are a smattering of shorter ones. All or most published before, and at least one was in another collection (but since it is a favorite of mine I enjoyed rereading it.) There are twists, and interesting characters, and believable environments. Well worth a read.
This is an omnibus of Noninterference, Kaleidoscope, and Earthgrip. Kaleidoscope has unconnected short stories. Earthgrip can be read either as a series of short stories or as a novel.