>>16418581
I just watched the first level, yeah it's accurate enough, nothing more than a trench under artillery fire. Artillery cut down a lot of guys in the Civil War, and the yankees had a big advantage in average artillery technology so Confederate forces would be bombarded from a position outside the range of their own older guns. Military Historians generally agree that the Civil War was the first "modern" war, eclipsing the Napoleonic concept of the "nation under arms" and introducing the "nation at war" or "total war", since the U.S. Civil War was one of the first, if not the very first, war in which the economic and industrial capabilities of both nations were fully utilized in support of the war effort, an effect of the Industrial Revolution. A lot of European generals looked at the Franco-Prussian war for lessons to learn and kind of slighted the lessons of the American Civil War, and as a result they weren't prepared for the absolute chaotic mess that WW1 was going to be, but of course the Civil War lacked plenty of the new surprises that would catch them off guard.
Trench warfare in the civil war wasn't as utilized as WW1 though, comparatively speaking it was very limited, so don't imagine the civil war as this 24/7 trenchfoot kind of deal, you were more likely to be marching than entrenched regardless of which side you were on.