Johan Cosar went to Syria not to fight for the Islamic State group, but against them. Now, the former Swiss army officer is facing a military tribunal back home.
He is charged with joining a foreign army and thus undermining Switzerland’s neutrality and security.
Mr Cosar makes no attempt to hide his actions and remains proud of them.
“The law forbids fighting for a foreign force,” an army spokeswoman said. “Who that force actually is, is irrelevant.”