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."
Mr Cosar was born in Switzerland, and is a Swiss citizen. But his grandparents have Syrian roots, and the Cosar family are members of the Syriac Christian community.
God Bless you Johan. I pray that any and all charges against you are soon dropped, and you can be a free man shortly. Thank you for your fight & leadership against this evil threat. Unlike some other people I could mention...
"And maybe just remind the few, if ill of us they speak, That we are all that stands between the monsters and the weak."