If I were a Hollywood mogul for a month or so, I would look to do a picture on Antietam, to me the seminal battle of the war. I would insist on avoiding the long, deliberate soliloquies as demonstrated in Gettysburg and Gods and Generals, as I felt those dialogs were off putting to the mass of modern viewers. While I enjoyed the dialog personally, I still feel that the scenes were a bit over dramatic maybe even semi hammy, with the supporting cast looking soulfully in every direction as the words flowed over the scenes like a deep pool.
While the Generals garner nearly all attention in Civil War films, I would insist on focusing on the story from a soldier's perspective, preferably to soldiers that lived through the battle. The odd Lieutenant, a few Sergeants and Corporals and the remaining main charters fleshed out by your ordinary ever day knuckle dragging Private. I would do the battle scenes much like Tae Guk Gi: The Brotherhood of War or the opening landing scene from Saving Private Ryan or the first few episodes of Band of Brothers, to demonstrate just how brutal the Civil War really was. The resulting imagery of the film would remind viewers of what really happened and possibly removing some of that lustrous sheen of romanticism, which surrounds the War to this day.
I would avoid the high notions of "Fighting to Save the South from the Tyranny of Oppression" or "Fighting to Restore the Union" or " Fighting to Free the Slaves" mentality which dog period films. My focus would be on the soldier's perspective and the thoughts of survival, the senseless slaughter of men for what was arguably a draw and the Us versus Them mentality which no doubt played on both sides of the battlefield.
My cast would consist of smaller bit part actors and unknowns, much as was done in Band of Brothers. Not having a leading actor with "Star Power" would no doubt take away from the box office numbers, but not having to stroke the ego of a "Star" would not force the film to compete with the performance of said "Star"
I would not include the Hollywood formula for modern war films; The gang gets together, they are a hot mess, someone is a GI Joe in the mob of new recruits, someone is a Joe Sh-- The Rag Man, but becomes the hero of the unit, fight the battle and win the war haminahaminah. I would start with two opposing forces, receiving orders to met at some out of the way place in Maryland, march onto the field of battle and slaughter each other and limp away scratching their heads, wondering exactly what they accomplished at such a high cost, then moving off to yet another round of slaughter.
My wife and I have discussed just what these men, who survived the war, would have been like upon their return to their homes after the war. I often wonder what my 17 relatives who survived from McDowell to Appomattox were like when they got home. I assume that the tight jawed, say little, ultra reserved, very conservative traits of my Dad's side of the family stems directly from those men who returned, scarred by what they had lived through. That would be the movie I would make.