Nearly forgotten amid the Union victories of 1863 was the Union attempt to bring the war back to where it started: Charleston, South Carolina. The siege of Charleston became the site of numerous engineering innovations that presaged warfare of the next 60 years, as the North tried to take the city and fort that symbolized the birth of secession.
In September, 1918, two desperate battles unfolded over two consecutive days between lightly armed American Naval vessels and the same German Submarine.