The Nautilus Sanction (Time Wars Book 5)

In the 27th century, the Russians construct the most powerful nuclear submarine of all time and christen it the Nautilus. It was intended to ensure Russian security and military supremacy, but it was never intended to be hijacked and equipped for time travel by a terrorist force determined to start the greatest war the world has ever seen -- across the boundaries of time!

Major Lucas Priest's elite commando unit of the U.S. Army Temporal Corps is sent back through time to find the Nautilus and stop it, if they can, and to help them, all they have is a spirited Canadian harpooner named Ned Land and a middle-aged French writer of imaginative fiction named Jules Verne....