This is what happened my first campaign.
What should I choose in set up options to prevent it from happening so quickly and easily in my next game?
Full Campaign w/Kentucky (Union Invaded and Kentucky was my ally).
It was great fun, but in September of 62 I won due to reducing the Union Moral to 37 after I took Washington.
It really kinda is messed up because ATHENA did a really great job launching a three pronged Eastern Seaboard Invasion and ploughing inland through South Carolina after taking Norfolk.
I had to divert Lee and 2/3 of my troops to deal with it.
That left Jackson up North defending Harpers Ferry and the Strassberg Depot and a 700 Power force entrenched and guarding Alexandria and protecting Manassas which I had taken early in the war and held throughout.
It looked like Athena was going to try and take Manasses, so I took a chance and peaked my head out of Alexandria to try and push him back. My Garrison force won and followed him to Washington placing it under siege. Jackson rushes to support and two turns later DC falls.
I find it hard to believe the AI would allow Washington to be so lightly defended and then be taken so easily.
P.S. As a side question I would like to know....
Do other CSA players like keeping both LEE and Jackson as Corp Commanders, or should you make them Army Commanders ASAP?