Just finished my first campaign: The Revolutionary War as the Americans. I'm looking for advice, but here's what I think I've learned:
1. It's very easy for all your leaders to get bottled up in one location. I try to get them moved to as many areas as possible because of how much more powerful the forces are, even with a bad leader.
2. I'm probably too cautious with leaderless units that should be out exploring or trying to venture into possible siege opportunities until larger forces can get there.
3. I was very careful about finding shelter for winter, but just learned on the forums that you can still push in winter as long as you have enough supply units with you.
4. I used my Navy as much as possible to find the Brits, but I don't believe I ever stopped reinforcements from arriving and I don't believe that I blockaded enemy harbors by entering them. What exactly is the function of the Navy in the game? And, if your armies captured all of the coastal ports (very unlikely) would you cut off British reinforcements? In other words, are there any real goals related to the Navy and cutting off supplies?
5. The AI is very smart about pressing for objectives and finding your weaknesses. However, it is too timid in sieges and really should press to the attack in winter -- as mentioned elsewhere on the forum.
6. Bottom line: What a lot of fun. You really get to know the name of each leader, have many surprises from the AI, really get zapped when major reinforcements sneak in, and mourn the loss of these leaders when you mess up.
7. I would love to see future interface improvements like shortcut keys for assault-offense-defense-passive-entrench, etc. I still struggle a little about merging units. A little tough to get the hang. I wished you could watch the chess moves unfold and know which area of the map you were in before it all flashed by. I wish the battles would mention the nearest city instead of provinces that I can't remember.
I'm very, very happy with this purchase and can't wait to play the other side and begin increasing the difficulty settings.