1 - 4 (POD) - Battle of Chancellorsville: Confederate forces under Robert E. Lee defeats Union forces with 13,000 Confederate Casualties (Note: Stonewall Jackson survived), and 17,500 Union casualties.
20 - West Virginia enters the Union.
1 - 3 - Confederate forces under the command of Robert E. Lee and Thomas "Stonewall" Jackson defeats Union forces under the command George C. Meade at the Battle of Gettysburg.
13 - New York Draft Riots in New York City by opposers to the draft for the Union army.
13 - The Treaty of Philadelphia is signed by Robert E. Lee and Ulysses S. Grant, which stated that the Confederate States of America will be recongized by the United States of America, the United States will relinquish all federal property within the borders of the seceding states, and the Arizona and Indian Territories will be relinquished to the Confederate States.