The Bluecoats: North & South

This is what I've found to be the fastest method to get to 10 victories:

After selecting "New Game", choose to play as the South, set Difficult to Easy, Battles to Inactive, Attacks to Inactive, Reinforcements to Active, Storm to Inactive, then choose the 1862 scenario.

When it's your turn, press the X button & buy High-speed Reload. Move your rightmost army to North Carolina to the right. Have your middle army attack Missouri just to the north. Then have your leftmost army attack the Iowa fort to the north (if the Iowa fort isn't taken on your first try, attack it with any nearby armies in the next round until it is taken). Before the end of your turn, you may want to buy another army (press the X button & choose Jobs) & place it in one of your western states.

During the next round/month, attack whichever Northern armies are left. You may lose a battle or two, but you should be able to win by February (two full rounds).

Rinse & repeat.

You have to win 10 campaign matches.

Doesn’t matter on which difficulty or what modifiers are active or not, also doesn’t matter which year you play in. You can do 1861 ten times if you please.

Local coop doesn’t work.
It has to be single player campaign.