He was assigned by Yuri Kellerne to fly a crippled Gaw filled with Zeon solders from Odessa all the way back to Ginias' base. While in flight, he encountered the 08th team dropping from Medea transports. Their leader, Shiro Amada, held Bjorn at gunpoint in the Ez8 and told Bjorn to stop firing. Bjorn had no choice and Shiro let him go.

He later rendezvoused with Yuri and convinced him to let him borrow some HT-01B Magella Attack Tanks to stall and make time for the rest of the men to retreat into Ginias' base. He and two other soldiers (Lunen and Barry) set off in the tanks to confront the 08th ms team. He and the others encountered Sanders and Shiro, they had a skirmish and the other two tanks retreated to the base while Abust stayed to play "mind games" with Shiro. Shiro then destroyed Abust's tank. Abust however took flight just in time to escape alive.