Explain the code used to tell paul revere and william dawes

I think the code was,"Oneth by land and Twoeth by sea." 
And Paul Revere, William Dawes, and a huge band of men who edventually joined rode along to warn the towns the british were comming for the guns stored in Concord. 
The two battles were the first battles fought in the Revolitionary War, and the minuremen who defended Concord fired shots, "Heard round the world."

Sorry wish i could