Joseph Hooker replaces his cavalry commander, Confederates raid his depot, and Robert E. Lee looks to hurry his planned northern invasion.

Exploring the most important 55 months in American history
Joseph Hooker replaces his cavalry commander, Confederates raid his depot, and Robert E. Lee looks to hurry his planned northern invasion.
The flying column of Joseph Hooker’s Federal Army of the Potomac crosses the Rapidan River, while Robert E. Lee begins to realize the real threat to his Confederate Army of Northern Virginia is coming from the north.
Joseph Hooker is forced to adjust his plan to attack the Confederate Army of Northern Virginia due to heavy rains, and confidence within the Federal Army of Potomac begins to wane.
Joseph Hooker’s plan to confront the Confederate Army of Northern Virginia hits a snag when his cavalry gets caught in torrential rain.
Joseph Hooker’s new Federal Cavalry Corps leaves Falmouth to cut the Confederate supply lines preparatory to a main attack on Robert E. Lee’s Army of Northern Virginia.
The Federal Army of the Potomac enters the abandoned enemy works at Yorktown. Some hail this as a great victory while others note that the Confederate army had escaped intact.