He was the son of the Imperial Officer that issued the order that causes the Hamel Tragedy and by extension, causing the Hundred Days War to happen. Chancellor Giliath Osborne was the man responsible for bringing his father to justice for his heinous act. Lechter had sensed an ominous suspicions when his father told him about the new plan he had concocted to raise their status as a nobility. When Osborne drops by to listen to his story after the execution of his father, Osborne handed Lechter a letter written by his father, recounting the event in what he describes as "a moment of weakness". Feeling guilty for the fact that he had sensed his father's action yet failed to do anything to stop it from happening, he considers himself to be an accomplice to his father's atrocity. Osborne, sensing that there's a potential to be had from Lechter, decided to invite him into the Ironbloods, in which he accepted.
From then onwards, Lechter swore an oath that one day, he will best the man known as the Blood and Iron Chancellor.