The ‘sacramentum militaie’ (military sacrament) was used with recruits into the Roman army who swore an oath of allegiance and received a mark (such as a tattoo or a brand) and a new name. The Roman Legions had their sacramentum, and the Church had its sacramentum. Christianity so dominated the Roman Empire that we no longer think of the military and legal meanings of sacrament for Romans. The Christians understood whose kingdom they lived in and whose kingdom they were passing through. Music recorded by St. Mark Choir pursuant to One License