Army of Northern Virginia
In the Battle of Seven Pines, Johnston was wounded. Jefferson Davis appointed Lee to take over command. In June 1862, when Lee took over, the army was a collection of various commands in Virginia and North Carolina. This is also when the army reached its peak strength of 90,000 soldiers. When he replaced Johnston, his orders had the heading "Department of Northern Virginia," and the "Army of Northern Virginia". From that time on that was the name it was known by.