Battle Of Atlanta Battle Analysis

I can draw many conclusions from this data. Whilst I was creating the chart I noticed that the South had less casualties in all the battles, except for the Battle of Atlanta. The Battle of Atlanta was one of the later battles fought, so I believe that as the war got closer to the end, the North eventually began prevailing in the battles. In general, I believe the North had more casualties in 90% of the battles I studied because their strategy was offensive, while the South’s was defensive. This meant the North was the aggressor and had to cover ground in the South’s territory to fight the war, losing more people.
I can draw another conclusion from the map. Out of all the battles I studied, most took place in the northern Confederate territory,