He was a member of the Central Command, the head of the military justice system with the rank of Chief Justice. He was very ambitious to further his career, and raised his son to be the same and to be a strong, capable man. Skrain loved his father very much, and Procal treasured his family dearly.
Procal apparently furthered his ambitions by engaging in criminal activities, using his position and influence to shield him from the law. Needing proof, the Obsidian Order sent Elim Garak to gather evidence on Procal's secret activities. Garak managed to worm his way into Procal's inner circle by earning his trust and taking advantage of his short-sightedness. Garak exposed Procal's activities to the Cardassian Central Command, effectively ending Procal's career. After being arrested and put on trial, Procal claimed that his only flaw was that his ambition outweighed his patriotism, and was sent to prison for life. The Order sent Garak to interrogate Procal again, but Procal was able to resist Garak's torture methods and attacked him. Procal was killed by Garak in the ensuing scuffle. Skrain despised Garak from then on, which would last the rest of both their lives. (DS9 novel: A Stitch in Time)