marquo wrote:So how does a large 3 day battle like Gettysburg get fought? I mean what is the best way to put some 100,000 + men in division/corps into one region on defense or offense? I understand synchronous movement, but some of these massive engagements had many corps on the offense and defense in one region.
You are perfectlly free to put 100.00 men and march them at Gettysburg. If they meet another 100.000 men army, the battle will be fought out in few days with massive casualties for both sides.
marquo wrote:What prevents forming a single stack of 250,000 men/cav/artillery? It would move very slowly and have a large command penalty, but could it burn like universal acid through anything in it's path?
Well, you can afford only one such stack, and there are many theaters and objectives. Do not expect low casualties when the defender is defending in forts or in mountains with let's say 40.000 men. You will push them out eventually, but only after 3-5 battles, with massive casualties for your side - not entirely smart thing to do.