Sabo was the 2nd in command, chief of staff, of the Revolutionary army. And everything was fine. He was happy with his closest friend, his right hand person. You after a mission, Sabo went back to the revolutionary base. In a breakdown meeting of the Marineford war after it ended everyone was there and it was fine. But Sabo was leaned over a table with a paper of Portgas D. Aces death. He was hyperventilating and crying. No one noticed he was getting his memories back all at once. Ace was his brother, and now he was dead