I thought I would subsidize the Union strategy thread
I personally am a fairly aggressive player and so I really can't tolerate passive buildup of manpower until a crushing victory can be made. During the early months of the game, I invest most of my troops to the West and TransMiss. There are several key positions that there really is no excuse for letting the Conf. have: Bowling Green, KY; Springfield, MO; Rolla, MO; and Jeff City, MO.
I've played several players who will ignore Missouri as the north, providing just enough men to defend St. Louis. However, most towns in Missouri are quite beneficial to have. Rolla and especially Springfield really have great production of ammunition and general supply and Jefferson City is the recruitment depot for Missouri. Both Rolla and Jefferson City are easily captured early and with the smallest investment of a few brigades and some cannons, Springfield can almost always be rested from the South.
Another important thing, I feel, is garrisoning depots and other cities of productive importance i.e. Lancaster and Reading. As the south there is nothing more I like to do than send a cavalry regiment and capture those undefended cities for a few turns for precious free war supply.
On the main fronts I'm always trying to maneuver my forces to get around the main enemy positions of forcing them to move. Forcing the enemy to attack you is always a good thing to do. Something even the inactive commanders of the North can accomplish. Also in the West I like to keep my fleet nearby my armies for rapid naval strikes. Capturing independent Harbors with a cavalry regiment is a good way get your army within striking distance of a city without incurring the river crossing penalty.
I suppose how I distribute my troops depends on the game, but generally I spend more resources on the West. I feel that capturing the West is just as important as Richmond and also requires a lot more garrisoning and maintaining military control. I think of the East as a hard nut that once cracked is open for the taking, while the west is more a large piece of bread that isn't done until every crumb is eaten. (Pardon my metaphor, but I'm hungry
) Anyways the point is, once you have Richmond, the majority of your work is done in the east. While in the west, there is no central point of control.
I like to capture Charleston via naval invasion and from there Savannah is only a turn or two away. It is really hard to defend against a naval invasion and most coastal cities are a really juicy prize.
That is basically what I try to accomplish when I play as the North. I like to think of myself as such a player to adapt to any situation and therefore to have no central strategy, but then I would just be vain
Anyways, my suggestions and comments are probably very generic and obvious, but there might be some useful information in there for someone.