[8] He spent five years serving in Croatian 1st Mechanized Battalion "Tigers" as a professional soldier, until realising that he will unlikely be promoted.

[10] As the invasion started on 24 February, his unit on the frontline only managed to hold initial Russian onslaught for 12 hours, when they were given orders to withdraw.

[13] After his release, he assessed that regular Russian troops which originally captured his group treated them rather correctly, but the harassment started when they were handed over to DNR militia.

[14] He was subsequently show-trialed by the DNR along with British nationals John Harding, Andrew Hill, Dylan Healy and a Swede Mathias Gustavsson.

[18] Prebeg later said in an interview to Croatian media that his captors tortured him with electricity, beat him and performed mock executions on him.

[21] Prebeg was released from Russian captivity after mediation of Saudi Arabian prince Mohammed bin Salman, along with dozens of other former Ukrainian international fighters.