Dimitrios Larissis, Savvas Mandalarides and Ioannis Sarandis were all officers in the Greek air force. They were also members of the Pentecostal Church, whose members have a duty to talk to others about their understanding of the Christian faith and encourage them to join their church.
All three airmen were prosecuted for evangelising their religion, which was treated as a criminal offence. They were all convicted and given suspended prison sentences of over a year.
The men took their case to the European Court of Human Rights, claiming that it had been unfair to convict them simply for discussing their religious faith with others.