Here is the full list of all 21 Commands & Colors: The Great War achievements.
Win while playing as the British side in any scenario.
While playing as the British side win a victory medal by occupying an enemy trench.
Add a shell crater to the battlefield either by mortar attack or offboard artillery.
Roll a burst side when in ranged combat but only rolling a single die.
Rolled 30 burst dice in combat during a single match.
Win while playing as the German side in any scenario.
Win while playing as the Canadian side in any scenario.
Rolled 20 deadly die side will rolling in close combat.
Take control of mine crater previously held by an opponent for 1 victory medal, or 2 victory medal swing.
Break through with a unit for one victory medal while controlling the Canadian side.
Win a match where your opponent has not won a single victory medal.
Collect 3 victory medals by playing recon cards in a single match.
Lose a unit to machine gun fire from two separate enemy units attacking in crossfire.
Win a scenario, that is not the opening tutorial scenarios, by eliminating enemy units only.
Use the command card artillery bombard alongside the combat card box barrage.
Use the tactician combat card to order 4 or more battlefield units.
Complete first multiplayer match.
Roll 10 deadly die sides while in artillery combat and rolling for hits on the target hex.
Achieve victory playing as the British side in all scenarios featuring this side.
Achieve victory playing as the German side in all scenarios featuring this side.
Achieve victory playing as the Canadian side in all scenarios featuring this side.