Fern wrote:To bk6583:
Please tell me a big ACW battle (ours was 99.000 men against 77.000 men) were the winning side lost more than 50% of the men (from 99.000 down to 48.000) while the losing side was was almost anihilated, losing about 80% of his force (from 77.000 men down to 16.000 men). A.S. Johnston had a good initiative as their corps commanders also did.
Yes, there were such battles. The battle of Fort Donelson is one.
Grant commanded a force of about 25k yankees, with a naval force in support.
The Confederates had a really good position at Fort Donelson. They held the high ground, overlooking the river. Layers of trenches all around, with rifle pits, prepared positions for artillery (Columbiads etc.), and a little village in the middle. No reason they (approx 20k) wouldn't hold out for ages there, possibly even defeating the incoming Yanks, given the odds.
Grant came, and sent in the ironclads first, which got totally hammered by the Confederate artillery - the federal navy couldn't get a single decent shot in at the rebels in their positions.
The infantery next, but all attacks got repulsed.
However, the Confederate leadership was messed up. Their actions can best be described as running around in circles, arms waving and bumping into each other.
4 days later and the whole shebang surrendered. (But, some Confederates escaped, such as Nathan Bedford Forest, who was totally disgusted).
If this had been in game, it would have showed the entire Confederate force as casaulties, which need to be read in this way: "these units have lost all their strategical military value and are removed from the game". The Yanks would have lost just some red men in attrition, no units lost.
And all that after just four days of fighting! SMASH!!!
Can you imagine how frustrated the Confederate commander for the western district felt at the time?

Your brother may have felt that it's "unfair" or "unnatural" to have his entrenced force disintegrated like that, but hell, tell me the Fort Donelson battle wasn't a lot worse?
It's not impossible that battles turn out in ways that just make you go all

leure:
Fort Donelson's prepared defences WAS a trap in this battle, even when these defences were really good. The Confederates found themselves defending a good spot, but had no way out. They did try to leave but they couldn't do it. Defences sound good, but there's a real danger in digging yourself a trap.
You should google this battle, it's really an interesting read of how awry things can go.