In 1863, Abraham Lincoln proved himself a master of a new frontier--not on the battlefields of the Civil War, but in his "high-tech" command center, the War Department Telegraph Office. The telegraph was the "Internet" of the nineteenth century, and it gave Lincoln powers of command, communications, and control never before exercised by a commander-in-chief. He used this new technology to connect the country to him--receiving nearly live dispatches via telegraph from his generals in the field and sending out his plans for the nation faster and with more clarity than ever before.
Source: Kanopy
In the summer of 1863, the Civil War reached a climax on two fronts. Study the brilliant generalship of Grant in isolating and defeating the Confederate force defending the Mississippi River fortress of Vicksburg, cutting the South in two. Then dissect Gen. George Meade's tactics that halted Lee's daring invasion of the North in a three-day battle in and around Gettysburg, Pennsylvania.
Source: Kanopy