Here is the full list of all 16 Sabres of Infinity achievements.
You died a heroic death in a great battle.
You were murdered by your own subordinates.
Be decorated for your deeds in battle.
Complete the story with a character above the age of 30.
Meet one officer from each of Tierra's five duchies.
You bluffed a superior force into surrendering without a fight.
You have obtained a knighthood.
You defended a seemingly hopeless position in a great battle.
You rode at the head of a desperate charge in a great battle.
You chose to relieve yourself of your duties after an act of grave dishonour.
You employed hand grenades in an attack.
You exposed the atrocities of a fellow Tierran officer.
You completed the story with high idealism and high ruthlessness.
You completed the story with high cynicism and high mercy.
Win every decoration.
Win every decoration in a single playthrough and end the story with a high reputation.