Callistratus was born in Carthage to Christian parents. In time, he joined the army, where he was the only Christian in his regiment. One of his fellow-soldiers saw Callistratus rise during the night to pray, and reported him to their commander.
Callistratus was interrogated, then, when he refused to deny his faith or make sacrifice to the idols, was harshly beaten, then tied in a sack and thrown in the sea. But the sack burst open and Callistratus emerged from the sea unharmed.
Seeing this, forty-nine of his fellow-soldiers confessed Christ, and were beaten and thrown into prison with Callistratus. In prison, Callistratus instructed the newly-enlightened Christians in the faith.
Finally, all of them were beheaded, according to some sources in 288, according to others in 304.
Troparion — Tone 3
In contest you were strengthened by the Holy Spirit, Martyr Callistratus, / and were glorious in casting down the Enemy. / You offered a noble army of athletes / as sweet-smelling incense to Christ. / With them pray for us who praise you with hymns.
Kontakion — Tone 4
Podoben: “Today You have shown forth…” / Like stars you have shone upon the world / shedding the light of your contests and miracles upon all who cry to you: / “Rejoice, Martyr Callistratus and fellow company of martyrs.”