Here is the full list of all 11 The Bluecoats: North & South achievements.
Win ten victories
Play a local multiplayer game
Complete a game in 1861, 1862, 1863 and 1864
Win three times in a row in hard mode
Win in less than five months
Take control of your first train
Win ten battles
Win your first victory
Capture the five forts in a single game
Take control of your first fort
Create a powerful army by merging three armies