

It can also be an "unnatural" fantasy/ science fiction plot device such as time travel, which usually takes the form of someone bringing modern weapons or hindsight knowledge into the past.

The point of divergence in such a story can be a "natural, realistic" event, such as one general making a different decision, or one sentry detecting an enemy invasion unlike in reality. Less common variants include a Union victory under different circumstances from actual history, resulting in a different postwar situation black American slaves freeing themselves by revolt without waiting for Lincoln's Emancipation Proclamation a direct British and/or French intervention in the war the survival of Lincoln during John Wilkes Booth's assassination attempt a retelling of historical events with fantasy elements inserted the Civil War never breaking out and a peaceful compromise being reached and secret history tales. The most common variants detail the victory and survival of the Confederate States. The American Civil War is a popular point of divergence in English-language alternate history fiction.

American Civil War alternate histories are alternate history fiction that focuses on the Civil War ending differently or not occurring.
