The Regulars are coming out!

If the British march By land or sea from the town to-night, Hang a lantern aloft in the belfry-arch Of the North-Church-tower, as a signal-light,-- One if by land, and two if by sea And I on the opposite shore will be, Ready to ride and spread the alarm Through every Middlesex village and farm, For the country-folk to be up and to arm.