David J. Kowalski 
The Company of the Dead 

A mysterious man appears aboard the Titanic on its doomed voyage, his mission to save the ship. The result of his efforts is a world where the United States never entered World War I, thus launching the secret history of the 20th Century. April 2012. Joseph Kennedy, relation of John F. Kennedy, lives in an America occupied on the East Coast by the Germans and on the West Coast by the Japanese. He is one of six people who can restore history to its rightful order—even though it will mean his own death.