Professor Thaddeus Lowe ascends in a balloon to demonstrate the usefulness of aerial military reconnaissance, and J.D. Mills demonstrates a forerunner to the modern machine gun.
June 3, 1863 – General Robert E. Lee directed his Confederate Army of Northern Virginia to begin its second invasion of the North. Rumors had
April 26, 1863 – Major General Joseph Hooker issued marching orders for the Army of the Potomac to begin a new campaign against General Robert