Years ago in Washington D.C. at the National Archives was fortunate to come accross State Muster in cards and regiment lists.
Having the unit numbers opened the door to following Family members and their units thru the Civil war.
The Peninsula Campaign in Virginia lasted along time...the battles of the Wilderness...Spotsylvannia and Cold Harbor were slugfests with gruesome outcomes for both sides.
In Ken Burns series on the Civil war a narrator tells a yarn about the last stand of the Army of Northern Virginia near Appomatox.
A young southern soldier is retreating from a skirmish with others...
When stopped...he is asked why he is running?
His timely response
"I'm runnin...cuz I can't Fly"!